Project Victim of the Week

[Teeny Victory]

Reserving SpD Skarmory
Counter

Skarmory @ Leftovers
Ability: Sturdy
EVs: 248 HP / 8 Def / 252 SpD
Careful Nature
- Iron Head
- Spikes
- Roost
- Whirlwind

Thanks to its fantastic typing and with the help of this sets max SpD investment, Skarmory can act as a excellent counter to Mega-Alakazam. Although encore annoys it, Skarm isnt really worried about anything 'Zam can do, gobbling up focus blasts and Shadow Balls and easily 2HKO'ing with iron head. Though it can come in on any move, its best to come in on psychic ro shadow ball, as Focus Blast forces you to roost (If they are lucky and actually hit lol) leaving you as encore bait, while coming in on other moves allows you to freely Iron Head 'Zam to death.

Calcs

252 SpA Alakazam Psychic vs. 252 HP / 252+ SpD Skarmory: 68-81 (20.3 - 24.2%) -- possible 6HKO after Leftovers recovery
252 SpA Alakazam Focus Blast vs. 252 HP / 252+ SpD Skarmory: 121-143 (36.2 - 42.8%) -- guaranteed 3HKO after Stealth Rock and Leftovers recovery
252 SpA Alakazam Shadow Ball vs. 252 HP / 252+ SpD Skarmory: 81-96 (24.2 - 28.7%) -- 56.2% chance to 4HKO after Stealth Rock and Leftovers recovery
Skarm Easily gobbles any hit up
0 Atk Skarmory Iron Head vs. 0 HP / 0 Def Alakazam: 135-159 (53.7 - 63.3%) -- guaranteed 2HKO
And 2HKO's back with ease

 

[GnralLao]

SpDef MegaZard-Y as a Hard Check

Charizard @ Charizardite Y
Ability: Blaze
EVs: 240 HP / 76 Def / 176 SpD / 16 Spe
Calm Nature
- Fire Blast
- Will-O-Wisp
- Roost
- Earthquake / Solar Beam / Focus Blast

This rarely seen MegaZard-Y variant isn't even 2HKOed by MegaZam and OHKOes it back with Fire Blast. Being Encored into Roost after taking SR damage kinda sucks, but unless its SpDef drops, it won't even matter since, like I said, it's not 2HKOed by MegaZam without SR.

Calcs

252 SpA Mega Alakazam Focus Blast vs. 240 HP / 176+ SpD Mega Charizard Y: 56-67 (15.6 - 18.7%) -- possible 6HKO
252 SpA Mega Alakazam Shadow Ball vs. 240 HP / 176+ SpD Mega Charizard Y: 76-90 (21.2 - 25.2%) -- 0.1% chance to 4HKO
252 SpA Mega Alakazam Psychic vs. 240 HP / 176+ SpD Mega Charizard Y: 127-151 (35.5 - 42.2%) -- guaranteed 3HKO

0 SpA Mega Charizard Y Fire Blast vs. 0 HP / 0 SpD Mega Alakazam in Sun: 279-328 (111.1 - 130.6%) -- guaranteed OHKO

 

[Mio Isurugi MM]

Counter/Check

Meloetta @ Assault Vest
Ability: Serene Grace
EVs: 248 HP / 252 SpA / 8 SpD
Modest Nature
IVs: 0 Atk
- Psyshock
- Hyper Voice
- Focus Blast
- Shadow Ball

Calcs

252+ SpA Meloetta Shadow Ball vs. 0 HP / 0 SpD Mega Alakazam: 198-234 (78.8 - 93.2%) -- guaranteed 2HKO
252+ SpA Meloetta Shadow Ball vs. 0 HP / 0 SpD Mega Alakazam: 198-234 (78.8 - 93.2%) -- 37.5% chance to OHKO after Stealth Rock

252+ SpA Mega Alakazam Focus Blast vs. 248 HP / 8 SpD Assault Vest Meloetta: 96-114 (23.8 - 28.2%) -- 95.1% chance to 4HKO
252 SpA Mega Alakazam Focus Blast vs. 248 HP / 8 SpD Assault Vest Meloetta: 88-104 (21.8 - 25.8%) -- 1.5% chance to 4HKO

Meloetta is really a great counter to M-Alakazam, in conlcusione we can say that is one of the best to keep the best M-Alakazam. I think that Meloetta AV is a good Counter & Check

 

[qways]

Counter

Landorus-Therian (M) @ Choice Scarf
Ability: Intimidate
EVs: 252 Atk / 24 Def / 232 Spe
Jolly Nature
- Earthquake
- U-turn
- Knock Off
- Explosion

252 Atk Landorus-T Earthquake vs. 0 HP / 4 Def Mega Alakazam: 250-295 (99.6 - 117.5%) -- 93.8% chance to OHKO
252 Atk Landorus-T U-turn vs. 0 HP / 4 Def Mega Alakazam: 234-276 (93.2 - 109.9%) -- 56.3% chance to OHKO
252 SpA Mega Alakazam Psychic vs. 0 HP / 0 SpD Landorus-T: 222-262 (69.5 - 82.1%) -- guaranteed 2HKO

Thx to its great bulk scarf lando-t easily survives one hit and can ohko back with eq or if alakazam was damaged a bit already eveb go for a u-turn.
It fears variabts running hp ice though.

 

[Random Passerby]

Counter

Landorus-Therian (M) @ Choice Scarf
Ability: Intimidate
EVs: 252 Atk / 24 Def / 232 Spe
Jolly Nature
- Earthquake
- U-turn
- Knock Off
- Explosion

252 Atk Landorus-T Earthquake vs. 0 HP / 4 Def Mega Alakazam: 250-295 (99.6 - 117.5%) -- 93.8% chance to OHKO
252 Atk Landorus-T U-turn vs. 0 HP / 4 Def Mega Alakazam: 234-276 (93.2 - 109.9%) -- 56.3% chance to OHKO
252 SpA Mega Alakazam Psychic vs. 0 HP / 0 SpD Landorus-T: 222-262 (69.5 - 82.1%) -- guaranteed 2HKO

Thx to its great bulk scarf lando-t easily survives one hit and can ohko back with eq or if alakazam was damaged a bit already eveb go for a u-turn.
It fears variabts running hp ice though.

It's a check since it can't come in repeatedly.

 

[GnralLao]

Hydreigon as a Check

Hydreigon @ Choice Scarf
Ability: Levitate
EVs: 4 Atk / 252 SpA / 252 Spe
Modest Nature
- Draco Meteor
- Dark Pulse
- Earth Power
- U-turn

This revenge killer variant also acts as a MegaZam check since Hydreigon can switch on most of its moves, Focus Blast being the only threatening move for it (unless it misses, which it will). In return, Hydreigon outspeeds (by four points!) and OHKOes MegaZam with Dark Pulse. If you want, you can use a Timid Nature to outspeed some other Scarfers and still OHKOing MegaZam, but the power loss is noticeable on other mons like M-Lopunny, M-Diancie and MegaGross because it now cannot OHKO them after SR.

Calcs

252 SpA Mega Alakazam Shadow Ball vs. 0 HP / 0 SpD Hydreigon: 59-70 (18.1 - 21.5%) -- guaranteed 5HKO after Stealth Rock
252 SpA Mega Alakazam Focus Blast vs. 0 HP / 0 SpD Hydreigon: 358-422 (110.1 - 129.8%) -- guaranteed OHKO (don't switch into that!)

252 SpA Hydreigon Dark Pulse vs. 0 HP / 0 SpD Mega Alakazam: 266-314 (105.9 - 125%) -- guaranteed OHKO
252+ SpA Hydreigon Dark Pulse vs. 0 HP / 0 SpD Mega Alakazam: 290-344 (115.5 - 137%) -- guaranteed OHKO

Volcarona as a Check

Volcarona @ Passho Berry / Lum Berry
Ability: Flame Body
EVs: 72 HP / 252 SpA / 184 Spe
Timid Nature
IVs: 0 Atk
- Quiver Dance
- Fire Blast
- Giga Drain
- Bug Buzz

Volcarona cannot face MegaZam if SR are up, but once you get rid of them, you can switch on anything bar Psychic (be careful though because you have a 2.34% chance to be KOed by Shadow Ball + Psychic) and setup Quiver Dance before outspeeding (avoiding being Encored) and OHKOing MegaZam with Bug Buzz (Volcarona OHKOes even without the Quiver Dance, but hey, if you have the opportunity to setup, why not do it?).

Calcs

252 SpA Mega Alakazam Focus Blast vs. 72 HP / 0 SpD Volcarona: 78-92 (23.7 - 27.9%) -- 91.6% chance to 4HKO
252 SpA Mega Alakazam Shadow Ball vs. 72 HP / 0 SpD Volcarona: 105-124 (31.9 - 37.6%) -- 91.8% chance to 3HKO
252 SpA Mega Alakazam Psychic vs. 72 HP / 0 SpD Volcarona: 177-208 (53.7 - 63.2%) -- guaranteed 2HKO (don't switch into that!)

252 SpA Volcarona Bug Buzz vs. 0 HP / 0 SpD Mega Alakazam: 318-374 (126.6 - 149%) -- guaranteed OHKO

 

[Random Passerby]

Metagross @ Assault Vest
Ability: Clear Body
EVs: 64 HP / 252 Atk / 192 Spe
Adamant Nature
- Meteor Mash
- Bullet Punch
- Earthquake
- Pursuit

AV Metagross can switch in safely on any move except Shadow Ball and OHKO Mega Alakazam with Meteor Mash or trap it with Pursuit. FB + Shadow Ball has a chance to KO but Mega Alakazam needs to have high rolls both times to do so.

Calculations

252 SpA Mega Alakazam Shadow Ball vs. 64 HP / 0 SpD Assault Vest Metagross: 160-190 (50.4 - 59.9%) -- guaranteed 2HKO
252 SpA Mega Alakazam Focus Blast vs. 64 HP / 0 SpD Assault Vest Metagross: 119-141 (37.5 - 44.4%) -- guaranteed 3HKO
252+ Atk Metagross Meteor Mash vs. 0 HP / 4 Def Mega Alakazam: 235-277 (93.6 - 110.3%) -- 62.5% chance to OHKO
252+ Atk Metagross Pursuit vs. 0 HP / 4 Def Mega Alakazam: 140-166 (55.7 - 66.1%) -- guaranteed 2HKO (this is 40 BP. If Mega Zam switches out, it dies)

 

[DarkNostalgia]

Pretty decent answer to Mega Alakazam I guess.

Check

Clefable @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 172 Def / 84 SpD
Calm Nature
- Calm Mind
- Moonblast
- Soft-Boiled
- Flamethrower / Knock Off

Clefable isn't 2HKOed by Psychic, and in turn 2HKOes back with Moonblast 67% of the time. It can also set up on Mega Alakazam with Calm Mind, though Encore tends to be annoying, but at a few boosts Alakazam can't break through Clefable at all.

0 SpA Clefable Moonblast vs. 0 HP / 0 SpD Mega Alakazam: 102-121 (40.6 - 48.2%) -- 66% chance to 2HKO after Stealth Rock
252 SpA Mega Alakazam Psychic vs. 252 HP / 84+ SpD Clefable: 168-198 (42.6 - 50.2%) -- guaranteed 3HKO after Leftovers recovery

Counter

Cresselia @ Leftovers
Ability: Levitate
EVs: 248 HP / 40 Def / 220 SpD
Calm Nature
- Moonlight
- Psychic
- Ice Beam
- Thunder Wave

Fat duck is here! Mega Alakazam fails to 3HKO Cresselia with Shadow Ball LOL, Cresselia literally just Moonlights when it's low on health, cripples Alakazam with Thunder Wave, and 4HKOes with Ice Beam. It's kinda like a stallfest but in the end Cresselia wins easily.

252 SpA Mega Alakazam Shadow Ball vs. 252 HP / 220+ SpD Cresselia: 136-160 (30.6 - 36%) -- 46.2% chance to 3HKO after Stealth Rock and Leftovers recovery
0 SpA Cresselia Ice Beam vs. 0 HP / 0 SpD Mega Alakazam: 54-64 (21.5 - 25.4%) -- 99.8% chance to 4HKO after Stealth Rock

 

[Aragorn the King]

Week 61:

Clefable @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 172 Def / 84 SpD
Calm Nature
- Calm Mind
- Moonblast
- Soft-Boiled
- Flamethrower

 

[Dr Ciel]

Taking Entei.

Pokemon: Entei
Status: Counter

Entei @ Choice Band
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Sacred Fire
- Extreme Speed
- Stone Edge
- Bulldoze

Entei can take anything Clefable can throw at him, taking literally nothing even from boosted attacks, and can easily 2HKO with STAB Sacred Fire.

Damage Calculations

0 SpA Clefable Moonblast vs. 0 HP / 0 SpD Entei: 62-73 (16.7 - 19.6%) -- guaranteed 6HKO

0 SpA Clefable Flamethrower vs. 0 HP / 0 SpD Entei: 39-46 (10.5 - 12.3%) -- possible 9HKO

0 SpA Clefable Focus Blast vs. 0 HP / 0 SpD Entei: 105-124 (28.3 - 33.4%) -- 0% chance to 3HKO

252+ Atk Choice Band Entei Sacred Fire vs. 252 HP / 172 Def Clefable: 258-304 (65.4 - 77.1%) -- guaranteed 2HKO after Leftovers recovery

 

[SketchUp]

Counter

Nidoqueen @ Life Orb
Ability: Sheer Force
EVs: 48 HP / 252 SpA / 208 Spe
Modest Nature
- Sludge Wave
- Earth Power
- Ice Beam
- Stealth Rock

Nidoqueen resists Moonblast, is immune to Thunder Wave and doesn't take much damage from Flamethrower. Nidoqueen can switch in against Clefable even if Clefable uses Calm Mind as Nidoqueen is able to break through the boosts with a Life Orb boosted Sheer Force Sludge Wave. Nidoqueen can switch in mutliple times because it only takes 20% from Moonblast, 25% from Flamethrower and only 6.25% Stealth Rock damage.

Turn 1: Clefable uses Calm Mind, Nidoqueen switches in
Turn 2: Nidoqueen outspeeds and uses Sludge Wave (61.4 - 73.3%) Clefable can use CM again or hit Nidoqueen with a +1 Monblast
Turn 3: If Clefable went for Calm Mind again, it is now at 44.8% max (Leftovers recovery included) A Sludge Wave against +2 Clefable still does 46.1% min. Clefable loses.
Worst case scenario: Nidoqueen lost 37.8% of its health.

nido vs clef

252+ SpA Life Orb Sheer Force Nidoqueen Sludge Wave vs. +1 252 HP / 84+ SpD Clefable: 242-289 (61.4 - 73.3%) -- guaranteed 2HKO after Leftovers recovery
252+ SpA Life Orb Sheer Force Nidoqueen Sludge Wave vs. +2 252 HP / 84+ SpD Clefable: 182-218 (46.1 - 55.3%) -- 10.9% chance to 2HKO after Leftovers recovery

clef vs nido

0 SpA Clefable Moonblast vs. 48 HP / 0 SpD Nidoqueen: 56-66 (16.8 - 19.8%) -- guaranteed 6HKO
+1 0 SpA Clefable Moonblast vs. 48 HP / 0 SpD Nidoqueen: 84-99 (25.2 - 29.7%) -- guaranteed 4HKO
+1 0 SpA Clefable Moonblast vs. 48 HP / 0 SpD Nidoqueen: 84-99 (25.2 - 29.7%) -- guaranteed 4HKO
252+ SpA Life Orb Sheer Force Nidoqueen Sludge Wave vs. +2 252 HP / 84+ SpD Clefable: 182-218 (46.1 - 55.3%) -- 10.9% chance to 2HKO after Leftovers recovery

 

[Lil YoshiXD]

Hard Check/Counter

Heatran @ Leftovers
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Fire Blast
- Taunt
- Flash Cannon
- Stealth Rock/Earth Power/Toxic

This is a more offensive variety of Heatran with more SPA and Fire Blast and Flash Cannon
Taunt is still used to stop set up. I prefer taunt over roar as it doesn't let you get last mon'd. Last Slot is customize able. You easily beat Flamethrower and ice beam variants. Thunderwave variants come down to how many full paras you get before you can pull off a taunt. Moonblast doesn't do too much, but if they get to +6 it hits hard enough and you can't do much back without a crit. Encore variants are annoying but you beat them. Focus Blast variants beat you.

Calcs:
252 SpA Heatran Flash Cannon vs. +1 252 HP / 96+ SpD Clefable: 156-186 (39.5 - 47.2%)
252 SpA Heatran Flash Cannon vs. +2 252 HP / 96+ SpD Clefable: 116-140 (29.4 - 35.5%)
252 SpA Heatran Flash Cannon vs. 252 HP / 96+ SpD Clefable: 236-278 (59.8 - 70.5%)
252 SpA Heatran Fire Blast vs. 252 HP / 96+ SpD Clefable: 160-190 (40.6 - 48.2%)

0 SpA Clefable Focus Blast vs. 0 HP / 0 SpD Heatran: 158-186 (48.9 - 57.5%)
+1 0 SpA Clefable Focus Blast vs. 0 HP / 0 SpD Heatran: 236-278 (73 - 86%)
+1 0 SpA Clefable Moonblast vs. 0 HP / 0 SpD Heatran: 35-41 (10.8 - 12.6%)

 

[Albacore]

Counter

Victini @ Leftovers
Ability: Victory Star
EVs: 248 HP / 100 Atk / 160 Spe
Adamant Nature
- V-create
- Bolt Strike
- Taunt
- Will-O-Wisp

Personal favourite Victini set of mine. This set switches in on anything from Clefable, Taunts it and then 2HKOes with V-Create.

100+ Atk Victini V-create vs. 252 HP / 172 Def Clefable: 246-291 (62.4 - 73.8%) -- guaranteed 2HKO after Leftovers recovery.

and still outspeeds after one Speed drop. Speed is kinda arbitrary but you still beat it with max Speed Jolly since you still 2HKO:

0 Atk Victini V-create vs. 252 HP / 172 Def Clefable: 204-240 (51.7 - 60.9%) -- 94.1% chance to 2HKO after Leftovers recovery

If you don't want the stat drops you can just Bolt Strike it, since it's taunted it can't recover anyway.

Can only lose if it gets paralyzed on the switch and then fully para'd an unrealistic number of times letting Clefable CM to +6 and even then :

+6 0 SpA Clefable Moonblast vs. 248 HP / 0 SpD Victini: 195-230 (48.3 - 57%) -- 41.8% chance to 2HKO after Leftovers recovery

lol

(oh yeah you can also run Adamant Bandtini and OHKO the sucker but thats boring :/)

 

[InvisibleWater]

Hard Check

Metagross @ Metagrossite
Ability: Clear Body
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Meteor Mash
- Zen Headbutt
- Ice Punch / Bullet Punch / Grass Knot
- Hammer Arm / Earthquake

Metagross can switch in on any of Clefable's moves (With the exception of Thunder Wave or a boosted Flamethrower) and OHKO with Meteor Mash. Bullet Punch does 2HKO, but it gives Clefable chances to heal, set up, or attempt to paralyze Metagross (unless the former has been sufficiently worn down).

However, if Metagross does switch into a Thunder Wave, it becomes dead weight for the rest of the battle.

Calcs

Offensive:
252 Atk Tough Claws Mega Metagross Meteor Mash vs. 252 HP / 172 Def Clefable: 446-528 (113.1 - 134%) -- guaranteed OHKO
252 Atk Tough Claws Mega Metagross Zen Headbutt vs. 252 HP / 172 Def Clefable: 196-232 (49.7 - 58.8%) -- 74.2% chance to 2HKO after Leftovers recovery
252 Atk Tough Claws Mega Metagross Bullet Punch vs. 252 HP / 172 Def Clefable: 198-234 (50.2 - 59.3%) -- 76.2% chance to 2HKO after Leftovers recovery
252 Atk Tough Claws Mega Metagross Ice Punch vs. 252 HP / 172 Def Clefable: 124-147 (31.4 - 37.3%) -- guaranteed 4HKO after Leftovers recovery
0- SpA Tough Claws Mega Metagross Grass Knot (60 BP) vs. 252 HP / 84+ SpD Clefable: 50-59 (12.6 - 14.9%) -- possibly the worst move ever
252 Atk Tough Claws Mega Metagross Hammer Arm vs. 252 HP / 172 Def Clefable: 82-97 (20.8 - 24.6%) -- possible 6HKO after Leftovers recovery
252 Atk Mega Metagross Earthquake vs. 252 HP / 172 Def Clefable: 124-147 (31.4 - 37.3%) -- guaranteed 4HKO after Leftovers recovery

Defensive:
0 SpA Clefable Moonblast vs. 0 HP / 4 SpD Mega Metagross: 45-54 (14.9 - 17.9%) -- possible 6HKO
+1 0 SpA Clefable Moonblast vs. 0 HP / 4 SpD Mega Metagross: 67-80 (22.2 - 26.5%) -- 19.1% chance to 4HKO
+2 0 SpA Clefable Moonblast vs. 0 HP / 4 SpD Mega Metagross: 90-106 (29.9 - 35.2%) -- 21.4% chance to 3HKO
+3 0 SpA Clefable Moonblast vs. 0 HP / 4 SpD Mega Metagross: 112-132 (37.2 - 43.8%) -- guaranteed 3HKO
0 SpA Clefable Focus Blast vs. 0 HP / 4 SpD Mega Metagross: 76-90 (25.2 - 29.9%) -- guaranteed 4HKO
+1 0 SpA Clefable Focus Blast vs. 0 HP / 4 SpD Mega Metagross: 113-134 (37.5 - 44.5%) -- guaranteed 3HKO
+2 0 SpA Clefable Focus Blast vs. 0 HP / 4 SpD Mega Metagross: 152-179 (50.4 - 59.4%) -- guaranteed 2HKO
+3 0 SpA Clefable Focus Blast vs. 0 HP / 4 SpD Mega Metagross: 189-223 (62.7 - 74%) -- guaranteed 2HKO
0 SpA Clefable Flamethrower vs. 0 HP / 4 SpD Mega Metagross: 114-136 (37.8 - 45.1%) -- guaranteed 3HKO
+1 0 SpA Clefable Flamethrower vs. 0 HP / 4 SpD Mega Metagross: 170-202 (56.4 - 67.1%) -- guaranteed 2HKO
+2 0 SpA Clefable Flamethrower vs. 0 HP / 4 SpD Mega Metagross: 226-268 (75 - 89%) -- guaranteed 2HKO
+3 0 SpA Clefable Flamethrower vs. 0 HP / 4 SpD Mega Metagross: 284-336 (94.3 - 111.6%) -- 68.8% chance to OHKO

 

[Freeroamer]

Counter

Venusaur @ Venusaurite
Ability: Chlorophyll
EVs: 232 HP / 252 SpA / 4 SpD / 20 Spe
Modest Nature
- Sludge Bomb
- Giga Drain
- Hidden Power [Fire]/Sleep Powder/Leech Seed
- Synthesis

Venu isn't a particularly fantastic counter as if Clef twaves it early on then switches out, then CMs later as Venu comes in, it will actually beat it 1v1 outside of crits.

 

[Lil YoshiXD]

Freeroamer thanks for the heads up, started to calc its and realized that. sheesh why is clefable so good?

 

[p2]

Jirachi as a Counter

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 96 Atk / 160 Spe
Adamant Nature
- Substitute
- Body Slam
- Iron Head
- Fire Punch

Jirachi can come in on anything, preferably not Thunder Wave and wear down Clefable with Iron Heads / Body Slams that have a 60% chance of flinching or paralyzing, while taking less than 40% from Flamethrower. As long as Body Slam paralyzes Clefable, Jirachi pretty much wins every single time.

 

[jay]

Check

Gliscor @ Toxic Orb
Ability: Poison Heal
EVs: 244 HP / 192 SpD / 72 Spe
Careful Nature
- Swords Dance
- Earthquake
- Roost
- Knock Off

Gliscor is able to switch to anyone of Clefable's attacks and take a little amount of damage to to Gliscor's nice bulk and the large amount of health it gets from poison heal. Gliscor uses Clefable as setup fodder and then kills it with two +2 earthquakes I'll show calcs below. Another reason Gliscor act's as a nice check is it has recovery so it won't get worn down by moonblast too easily. Gliscor also is immune to thunder wave which is very nice as well.

Calcs

0 SpA Clefable Moonblast vs. 244 HP / 192+ SpD Gliscor: 91-108 (25.8 - 30.6%) -- possible 5HKO after Poison Heal
+1 0 SpA Clefable Moonblast vs. 244 HP / 192+ SpD Gliscor: 135-160 (38.3 - 45.4%) -- 59% chance to 3HKO after Poison Heal
0 Atk Gliscor Earthquake vs. 252 HP / 172 Def Clefable: 109-129 (27.6 - 32.7%) -- 72.4% chance to 4HKO after Leftovers recovery
+2 0 Atk Gliscor Earthquake vs. 252 HP / 172 Def Clefable: 216-255 (54.8 - 64.7%) -- guaranteed 2HKO after Leftovers recovery
0 SpA Clefable Flamethrower vs. 244 HP / 192+ SpD Gliscor: 57-68 (16.1 - 19.3%) -- possibly the worst move ever
+1 0 SpA Clefable Flamethrower vs. 244 HP / 192+ SpD Gliscor: 85-101 (24.1 - 28.6%) -- possible 6HKO after Poison Heal

 

[heritage]

Volcorona didn't work too well, so I'll take Dragalge I guess.

Hard Check

Dragalge @ Choice Specs
Ability: Adaptability
EVs: 116 HP / 252 SpA / 140 Spe
Modest Nature
- Draco Meteor
- Sludge Wave
- Focus Blast / Hidden Power Fire
- Scald

Dragalge easily switches into all of Clefable's attacks, thanks to is above average Special Defense and typing, and can easily OHKO Clefable back with Sludge Wave without any Calm Mind boosts. Even at +1, Moonblast doesn't 2HKO from full and Dragalge even has a chance to OHKO back when Clefable is at +1 Special Defense. The only way Clefable could hope to win is some crazy Special Attack drops from Moonblast, and it has to be at +1 SpD already. Can't stall that out you dumb fairy. 140 Speed is to outrun said Clefable. (Thanks DarkNos o_o)

What Clefable does

0 SpA Clefable Moonblast vs. 200 HP / 0 SpD Dragalge: 82-97 (25.5 - 30.2%) -- guaranteed 4HKO

+1 0 SpA Clefable Moonblast vs. 200 HP / 0 SpD Dragalge: 123-145 (38.3 - 45.1%) -- guaranteed 3HKO

What Dragalge does back

252+ SpA Choice Specs Adaptability Dragalge Sludge Wave vs. 252 HP / 84+ SpD Clefable: 508-600 (128.9 - 152.2%) -- guaranteed OHKO

252+ SpA Choice Specs Adaptability Dragalge Sludge Wave vs. +1 252 HP / 84+ SpD Clefable: 340-400 (86.2 - 101.5%) -- 12.5% chance to OHKO

 

[Grim]

Tentacruel is a counter.

Tentacruel @ Black Sludge
Ability: Liquid Ooze
EVs: 248 HP / 244 SpD / 16 Spe
Calm Nature
- Scald
- Acid Spray
- Rapid Spin
- Toxic Spikes

Tentacruel switches into any move this Clefable carries (no Thunderbolt :]) and can use Acid Spray to slowly get rid of Clefable's Special Defense boosts and eventually all of its HP.

0 SpA Clefable Moonblast vs. 248 HP / 244+ SpD Tentacruel: 31-37 (8.5 - 10.1%) -- possibly the worst move ever pro

You can also use a defensive spread or another move, it depends on the team.

 

[Random Passerby]

Name : Excadrill
Status: Check

Excadrill @ Life Orb
Ability: Sand Rush
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Earthquake
- Iron Head
- Rock Slide
- Swords Dance / Rapid Spin

Excadrill can come in on any move except Flamethrower or Focus Blast (is this even a thing? ) and OHKO back with STAB Iron Head. Earthquake is a strong STAB move to spam when the opponent lacks a Ground resist while Rock Slide allows you to have coverage on Flying-types. Swords Dance allows Excadrill to boost it's already high Attack while Rapid Spin can be used to clear hazards. It's Ground typing also allows it to laugh at Thunder Wave.

Calculations

0 SpA Clefable Moonblast vs. 0 HP / 0 SpD Excadrill: 69-82 (19.1 - 22.7%) -- possible 5HKO
0 SpA Clefable Flamethrower vs. 0 HP / 0 SpD Excadrill: 176-208 (48.7 - 57.6%) -- 94.1% chance to 2HKO
0 SpA Clefable Focus Blast vs. 0 HP / 0 SpD Excadrill: 236-278 (65.3 - 77%) -- guaranteed 2HKO
252+ Atk Life Orb Excadrill Iron Head vs. 252 HP / 172 Def Clefable: 400-476 (101.5 - 120.8%) -- guaranteed OHKO

EDIT: Somebody do Jirachi. I somehow forgot about that thing.

 

[Imperator Romanum]

Clefable @ Leftovers
Ability: Unaware
EVs: 252 HP / 160 Def / 96 SpD
Calm Nature
- Moonblast
- Heal Bell
- Calm Mind
- Moonlight

This is the best and most effective ways of beating all Magic guard variants of Clefable. Clefable can set up on all of them regardless of their coverage move and eventually beat them with Calm mind boosted Moonblast. I added heal bell over wish + protect so I could beat a potential toxic varient.

 

[michaeloche]

Amoonguss @ Black Sludge
Ability: Regenerator
EVs: 252 HP / 136 Def / 120 SpD
Bold Nature
- Spore
- Giga Drain
- Hidden Power Fire / Foul Play
- Clear Smog

Role: Check if Flamethrower Clefable, Counter otherwise

0 SpA Clefable Flamethrower vs. 252 HP / 120 SpD Amoonguss: 130-154 (30 - 35.6%) -- guaranteed 4HKO after Black Sludge recovery

0 SpA Amoonguss Clear Smog vs. 252 HP / 96+ SpD Clefable: 84-102 (21.3 - 25.8%) -- possible 5HKO after Leftovers recovery

While that's not the greatest source of damage ever, Clear Smog is more used for its utility than its damage output. Spore is also a great deterrent to setup mons in general. Amoonguss can even switch in if Clefable hasn't set up too much, as it needs to be at +4 to even have a chance to OHKO, and that's only the Flamethrower variants.

 

[Swagata]

Pokemon: Gengar as a check.

Gengar @ Life Orb
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Shadow Ball
- Focus Blast
- Sludge Wave
- Taunt

Description: Gengar is able to come into Clefables attack quite safely if it doesn't carry Twave, with a pretty small chance of being 3HKOed by Flamethrower. It is able to shut down Clefable with Taunt and take it out with Sludge Wave.

Calculations:

• 0 SpA Clefable Flamethrower vs. 0 HP / 4 SpD Gengar: 79-93 (30.5 - 35.9%) -- 41.2% chance to 3HKO
• 252 SpA Life Orb Gengar Sludge Wave vs. 252 HP / 84+ SpD Clefable: 369-437 (93.6 - 110.9%) -- 56.3% chance to OHKO

 

[Fredrick1]

Mega Beedrill as a Check

---->

Beedrill @ Beedrillite
Ability: Swarm -> Adaptability
EVs: 252 Atk / 80 Def / 176 Spe
Jolly Nature
- Protect
- U-turn
- Poison Jab
- Knock Off

252 Atk Adaptability Mega Beedrill Poison Jab vs. 252 HP / 172 Def Clefable: 408-484 (103.5 - 122.8%) -- guaranteed OHKO
0 SpA Clefable Flamethrower vs. 0 HP / 0 SpD Mega Beedrill: 150-178 (55.3 - 65.6%) -- guaranteed 2HKO after Stealth Rock

Quote
"Pokémon A checks Pokémon B if, when Pokémon A is given a free switch into Pokémon B, Pokémon A can win every time, even under the worst case scenario, without factoring in hax."

When Mega Beedrill is given a free switch into Clefable. Mega Beedrill will always OHKO the standard Magic Guard Clefable with Poison Jab.