UU Victim of the Week! (Week Twenty-Seven: Contrary Serperior)

[Sleepless]

Presenting Gligar as counter :

Gligar @ Eviolite
Ability: Hyper Cutter
EVs: 192 Hp / 4 Att / 252 Def / 56 Spe
Impish Nature
- Earthquake
- U-turn/Stealth Rock
- Defog
- Roost

The physically defensive wall strikes back and is here to counter Victini. Similarly to the newly Faster Blaster trend, Gligar also easily outspeeds a -1 Naive/Hasty Victini with even a smaller amount of EV invesment. With just 4 EV's in Attack, after Stealth Rock, Earthquake will outspeed and will garantie a 1hko on a -1 defence Victini. Equipped with Grass Knot and even STAB Psychic backed by Life Orb, V-Create is still Victini's strongest option against Gligar as the former two will fail to 2hko even with Rocks up. Meaning if switched into Psychic, Gligar will just roost back and tire the Victini from LO recoils (beware of high roll crits). Also to note, Gligar's immunity to Bolt Strike which Victini spams when Gligar is paired with a bulky water type, predicting it's switch-in wrong. While not able to survive two high roles LO V-creates ( Expert Belt users are non issue ), Gligar outspeeds after switching-in and ,even if Victini is at full health minus just one LO recoil, it can roost off until Victini is within KO range due to the continuing LO recoils. Although a Counter, it is quite shaky as it needs to be near full health to take two Psychics and must keep it's Eviolite in order to successfully counter. Roost aids immensly keeping it's health assisted by immunity to (T)spikes. Defog is the main utility Gligar provides while it can also set the rocks, keep momentoum or have something like Toxic/Knock Off/Acrobatics.
Sidenot : Defensive spread of 216/228/0 or 160/252/32 is to prevent the 2.3% chance of 2hko by LO Psychic after rocks.

Relevant Calcs :
4 Atk Gligar Earthquake vs. -1 0 HP / 0 Def Victini: 258-306 (75.6 - 89.7%) -- guaranteed OHKO after Stealth Rock
4 SpA Life Orb Victini Psychic vs. 192 HP / 0 SpD Eviolite Gligar: 121-142 (37.9 - 44.5%) -- 2.3% chance to 2HKO after Stealth Rock
252 Atk Life Orb Victini V-create vs. 192 HP / 252+ Def Eviolite Gligar: 148-175 (46.3 - 54.8%) -- 60.5% chance to 2HKO

 

[8-BIT Luster]

Natures in Pokemon give a 10% boost while EVs give a single extra point for every 4 invested EVs (at level 100 at least this is how it works I believe). So if you have 300 in one stat and 200 in another and you want to invest in both of them you should really be giving the 10% boost to the 300 stat because it gives you more points over all while dividing up the EVs as how you see fit.
This is relevant to your Ampharos set in a rather strange way. Mega Ampharos has such a weird base stat distribution compared to say Mew with a gigantic SpA and tiny speed to go along compared to 100 all around. Normally Modest would be the best Nature (unless you want to absolutely max a defense in which case you would of course need a corresponding nature boost for that defense) but your spread is a little different because it wants some speed. Surprisingly the best nature for your set is Bold actually because your set doesn't focus on the power (whether that is good or not is besides the point) very much so Modest is actually overkill but your base defense is so much higher than your base speed.

Ultimately what I mean is this: assuming perfect IVs your spread of Timid 248 HP 124 Def 40 Spa 96 Spe yields stats of 383/203/277/376/256/165

The spread I am telling you is better is, assuming perfect IVs: Bold 248 HP 24 Def 40 Spa 156 Spe which yields 383/203/277/376/256/165.

Exactly the same points overall right? But the difference is the Bold spread doesn't use up all the EVs! If you add it all up you still have 40 spare to put in wherever you like making Ampharos almost always slightly better (almost because if you say put the extra 40 in Spa you might take more from a random Mirror Coat. But this is so freakishly uncommon it is better not to even worry about it).

If you truly want to be objectively better (or as close to objective as I think you can get, remember the Mirror Coat scenario) you can, out of those 40 extra EVs, put 8 in Speed and 16 in Defense. This still gives you an extra 16 EVs and with those extra EVs it lets your pre Mega Evolved Mega Ampharos have the same base stats for both sets (not including the extra 16 EVs yet).

Oh yeah. True. I originally had that spread to begin with haha.

 

[Bluwing]

im taking mega aero as president shinra never bothered to write it.

Aerodactyl @ Aerodactylite
Ability: Tough Claws
EVs: 120 HP / 252 Atk / 136 Spd
Jolly Nature (+Spd, -SAtk)
- Aerial Ace
- Stone Edge
- Aqua Tail / Earthquake
- Defog

aerodactyl is an excellent check to mixed victini as it can revenge kill it easely and the only move it can't switch in too is bolt strike. aerodactyl doesn't only check mixed victini but is also an excellent supporting pokemon as well as an wallbreaker with good coverage, acces to stealth rock, roost and defog, it can do basically whatever it wants to do. aerodactyls ability too check, revenge and wallbreak a large portion off the meta makes it an excellent choice for most teams as well.

some calcs.

252 Atk Mega Aerodactyl Stone Edge vs. 0 HP / 0 Def Victini: 338-398 (99.1 - 116.7%) -- 93.8% chance to OHKO

252 Atk Tough Claws Mega Aerodactyl Aqua Tail vs. 0 HP / 0 Def Victini: 270-318 (79.1 - 93.2%) -- guaranteed 2HKO

252 Atk Mega Aerodactyl Earthquake vs. 0 HP / 0 Def Victini: 226-266 (66.2 - 78%) -- 25% chance to OHKO after Stealth Rock

as you see aqua tail is prefered if you are scared of stone edge's shaky accuracy because it ko's after rocks which earthquake doesn't.

 

[CoolStoryBrobat]

Alright, top 3 checks/counters to mixed Victini have been decided (no specific order)!:

Top 3 Counters:

Arcanine - Professional2341
Goodra - Flygoner818
Snorlax - Calloflochie

Top 3 Checks:

Dugtrio - Colbrushie
Krookodile - Swamp Link
Hydreigon - Sage of the 6

OP and scoreboard will be updated accordingly.

This week's victim is gonna continue this weird spontaneous trend of the base 100 legends I randomly started off on...I guess. Hey hey shoutout to that event in Japan that gives it Moonblast:

Set name: Superachi! (Offensive Calm Mind Jirachi)
name: Offensive Calm Mind
move 1: Calm Mind
move 2: Psyshock
move 3: Moonblast
move 4: Hidden Power Fire / Energy Ball / Substitute
ability: Serene Grace
item: Leftovers / Expert Belt / Life Orb
evs: 252 SpA / 4 SpD / 252 Spe
nature: Timid

Edit: Congrats, Swamp Link, Colbrushie, and Sage of the 6, you have all won 3 times and have all earned 1 Leaderboard Point each.

 

[canasian]

Presenting Mega Aggron as a counter

Aggron @ Aggronite
Ability: Sturdy->Filter
EVs: 248 HP/8 Def/252 SDef
Careful Nature
- Earthquake
- Heavy Slam
- Stealth Rock
- Thunder Wave

+2 252 SpA Jirachi Psyshock vs. 248 HP / 8 Def Mega Aggron: 51-61 (14.8 - 17.7%) -- possible 6HKO
+2 252 SpA Jirachi Moonblast vs. 248 HP / 252+ SpD Mega Aggron: 72-85 (20.9 - 24.7%) -- guaranteed 5HKO
+2 252 SpA Jirachi Hidden Power Fire vs. 248 HP / 252+ SpD Filter Mega Aggron: 136-162 (39.6 - 47.2%) -- guaranteed 3HKO

0 Atk Mega Aggron Earthquake vs. 0 HP / 0 Def Jirachi: 192-228 (56.3 - 66.8%) -- guaranteed 2HKO after Leftovers recovery

 

[Sleepless]

reserving Empoleon

 

[Jellied Eels]

​

Victini @ Choice Band
Ability: Victory Star
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- V-create
- Bolt Strike
- U-turn
- Trick / Zen Headbutt or w/e

I'm reluctant to call tini a counter even though it ticks all the boxes (worst hit : +1 252 SpA Life Orb Jirachi Psyshock vs. 0 HP / 0 Def Victini: 105-125 (30.7 - 36.6%) -- guaranteed 3HKO after Stealth Rock) because the point of superachi is that you won't have been able to scout the set. Therefore blithely switching into what might be to SR + U-turn damage or Thunder Wave or Sub etc isn't a very smart idea.
Under these premises -- the unpredictability of the set -- Bandtini makes a good check to CM Rachi, even if CSB ends up tacking Thunderbolt onto the set, cause you always come out on top no matter who wins the speed tie. I didn't pick Scarf which I guess would be a cleaner solution because I don't like it as a scarfer rn Band is more popular and both the pixies are mid-game hole punchers anyway

252 Atk Choice Band Victini V-create vs. 0 HP / 0 Def Jirachi: 734-866 (215.2 - 253.9%) -- guaranteed OHKO ouchie

 

[slated]

Reserving arcanine.

 

[Sean B.]

Reserving mew

 

[dingbat]

Reserving Dugtrio as a check

Dugtrio @ Choice Band
Ability: Arena Trap
EVs: 252 Atk, 252 Spe
Jolly Nature
-Earthquake
-Stone Edge
-Sucker Punch
-Aerial Ace/Memento

If Jirachi is under a sub, of course Dugtrio is not going to fare well against Rachi as it's going to be wrecked by a Psyshock or Energy Ball while it can only break Rachi's sub... If not... Jirachi will be shaken to its death. A real quick death.

Of course, Rachi is not the only thing that Dugtrio can proceed to drag down to its death pit. Victini, Mega Ampharos, Heracross -- among many other unboosted 'mons under Dugtrio's speed tier, also fall victim to its dangerous trap.

Calcs:

252 Atk Choice Band Dugtrio Earthquake vs. 0 HP / 0 Def Jirachi: 356-420 (104.3 - 123.1%)

252 SpA Jirachi Psyshock vs. 0 HP / 0 Def Dugtrio: 189-223 (89.5 - 105.6%)
252 SpA Jirachi Energy Ball vs. 0 HP / 4 SpD Dugtrio: 218-258 (103.3 - 122.2%)

 

[8-BIT Luster]

Reserving Porygon2

EDIT: sic my reservation. I don't need it rn

 

[Sage]

Reserving Slowking

 

[8-BIT Luster]

I present to you a strange-ass yet effective counter to Superachi. Although Jellied Eels made a good point in saying Superachi's difficulty to beat lies in its unpredictability, for the purpose of this thread, we do have a set. I cancelled my reservation because I had finally found an idea, one that didn't need a reservation because it's weird as heck. I wanted something like Metagross, who could tank Psyshocks and Moonblasts EZ, but who wasn't weak to fire. Empoleon was taken, as was Victini. So I settled on a bulky offensive Bronzong lead.

Bronzong @ Light Clay
Ability: Heatproof
EVs: 180 HP / 178 Atk / 152 SpD
Adamant Nature
IVs: 0 Spe
- Earthquake
- Light Screen
- Gyro Ball
- Stealth Rock

Weird, right? Heatproof is amazing as it allows Bronzong to take anything Jirachi throws at it, and the EVs allow him to automatically 2HKO Jirachi with Earthquake.

Check it out:

Hide

+1 252 SpA Life Orb Jirachi Psyshock vs. 180 HP / 0 Def Bronzong: 47-55 (14.6 - 17.1%) -- possible 6HKO
+1 252 SpA Life Orb Jirachi Moonblast vs. 180 HP / 152 SpD Bronzong: 65-77 (20.3 - 24%) -- guaranteed 5HKO
+1 252 SpA Life Orb Jirachi Hidden Power Fire vs. 180 HP / 152 SpD Heatproof Bronzong: 83-99 (25.9 - 30.9%) -- guaranteed 4HKO
+1 252 SpA Life Orb Jirachi Energy Ball vs. 180 HP / 152 SpD Bronzong: 61-73 (19 - 22.8%) -- possible 5HKO
Even Hidden Power Fire doesn't do anything.
Even with rocks:
+1 252 SpA Life Orb Jirachi Hidden Power Fire vs. 180 HP / 152 SpD Heatproof Bronzong: 83-99 (25.9 - 30.9%) -- guaranteed 4HKO after Stealth Rock

And in return:
178+ Atk Bronzong Earthquake vs. 0 HP / 0 Def Jirachi: 172-204 (50.4 - 59.8%) -- guaranteed 2HKO

In conclusion, Bronzong can take anything Rachi throws at it and 2HKO in return.
The advent of a new meta is upon us

EDIT: removed some unnecessary explanation

 

[RufflesPro]

empoleon counter all day reserving
taken :(

Reserving metagross as what I believe is a counter

 

[CoolStoryBrobat]

Just a light reminder, and I kind of missed this seeing as it happened last week and it won, don't change your reservations after making them, please. :l

Just in the future. At least run some quick calcs or something so you don't have to feel dumb when you realize that thing you reserved didn't work as well as you expected. If someone reserved something before you and you didn't see it, that's fine. But if you just outright change it I'm gonna have to start denying peeps.

If you think this policy's too strict, you can thank based user Bouff for ruining it for y'all :]

 

[Sage]

Slowking as Check
View attachment 22227
Slowking @ Assault Vest
Ability: Regenerator
EVs: 252 HP / 4 Atk / 252 SpA
Mild Nature
- Scald
- Psyshock
- Fire Blast
- Dragon Tail

Basically Slowking is a great Assault Vest user unlike 90% of mons as he has innate good bulk, regenerator to keep himself from being worn down, and a decently powerful Special Attack. This set does very well against Jirachi unless it runs Energy Ball Life Orb. Regenerator allows you to continually check it throughout the game. If Jirachi does not Calm Mind on switch, you easily win.The only reason this is a check is because a +1 Life Orb Energy Ball 2hkoes, which means you are forced to Dragon Tail and only delay the inevitable. Otherwise Rachi can't really break Slowking.

Rachi vs King

+1 252 SpA Life Orb Jirachi Energy Ball vs. 248 HP / 8 SpD Assault Vest Slowking: 195-231 (49.6 - 58.7%) -- 99.6% chance to 2HKO (only reason this is not a counter)

+1 252 SpA Life Orb Jirachi Psyshock vs. 248 HP / 0 Def Slowking: 127-151 (32.3 - 38.4%) -- 97.5% chance to 3HKO (you 2hko at +1)

+1 252 SpA Life Orb Jirachi Moonblast vs. 248 HP / 8 SpD Assault Vest Slowking: 103-122 (26.2 - 31%) -- guaranteed 4HKO

King vs Rachi

252+ SpA Slowking Fire Blast vs. +1 0 HP / 0 SpD Jirachi: 146-174 (42.8 - 51%) -- 3.9% chance to 2HKO

252+ SpA Slowking Fire Blast vs. +2 0 HP / 0 SpD Jirachi: 112-132 (32.8 - 38.7%) -- 98.8% chance to 3HKO

So you do 75% min, and 89% max if it CM's twice. Also you can Dragon Tail if you predict a 2nd Calm Mind. Good Check, most run HP Fire anyway so to not be completely walled by Steels.

 

[slated]

Alright so for arcanine as a check.

Arcanine @ Leftovers
Ability: Intimidate
EVs: 168 HP / 176 Atk / 164 Def
Impish Nature
- Flare Blitz
- ExtremeSpeed
- Will-O-Wisp
- Morning Sun

Edit: thanks ding for pointing out my evs were wrong.

OK so basically this arcanine set is ev'd offensively to make sure flare blitz + extremespeed is guaranteed to KO even after leftovers assuming you get 2 minimum rolls. Jirachi only has a 13% chance to 2hko with a life orbed psyshock but if it gets to +1 it can easily 2HKO with psyshock (all assuming rocks are up). Arcanine always has an 81% chance to ohko with flare blitz.

252 SpA Life Orb Jirachi Psyshock vs. 168 HP / 164+ Def Arcanine: 130-153 (35.8 - 42.1%) -- 13.3% chance to 2HKO after Stealth Rock and Leftovers recovery
252 SpA Life Orb Jirachi Energy Ball vs. 168 HP / 0 SpD Arcanine: 64-75 (17.6 - 20.6%) -- possible 5HKO after Stealth Rock and Leftovers recovery
252 SpA Life Orb Jirachi Moonblast vs. 248 HP / 0 SpD Arcanine: 68-79 (17.7 - 20.6%) -- possible 5HKO after Stealth Rock and Leftovers recovery

+1 252 SpA Life Orb Jirachi Psyshock vs. 168 HP / 164+ Def Arcanine: 192-227 (52.8 - 62.5%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
+1 252 SpA Life Orb Jirachi Moonblast vs. 168 HP / 0 SpD Arcanine: 101-120 (27.8 - 33%) -- 91.4% chance to 3HKO after Stealth Rock and Leftovers recovery
+1 252 SpA Life Orb Jirachi Energy Ball vs. 168 HP / 0 SpD Arcanine: 95-113 (26.1 - 31.1%) -- 31.9% chance to 3HKO after Stealth Rock and Leftovers recovery

Arcanine:
176 Atk Arcanine Flare Blitz vs. 0 HP / 0 Def Jirachi: 330-390 (96.7 - 114.3%) -- 81.3% chance to OHKO
176 Atk Arcanine Extreme Speed vs. 0 HP / 0 Def Jirachi: 36-43 (10.5 - 12.6%) -- possible 8HKO (10% after 96% is enough to kill it after lefties)

Overall the odds are in your favor when trying to take out rachi with k9.

 

[RufflesPro]

Metagross @ Assault Vest
Ability: Clear Body
Nature: Adamant
EV's: 252 HP / 228 Atk / 24 SpD
- Meteor Mash
- Zen Headbutt
- Earthquake
- Bullet Punch / Ice Punch

Metagross as a Counter

+1 252 SpA Jirachi Hidden Power Fire vs. 252 HP / 24 SpD Assault Vest Metagross: 116-138 (31.8 - 37.9%) -- guaranteed 3HKO after Stealth Rock
+1 252 SpA Life Orb Jirachi Hidden Power Fire vs. 252 HP / 24 SpD Assault Vest Metagross: 151-179 (41.4 - 49.1%) -- 16% chance to 2HKO after Stealth Rock

228+ Atk Metagross Earthquake vs. 0 HP / 4 Def Jirachi: 242-286 (70.9 - 83.8%) -- guaranteed 2HKO after Leftovers recovery

Simple an easy

AV Metagross is viable in the meta too

 

[dingbat]

Alright so for arcanine as a check.

Arcanine @ Leftovers
Ability: Intimidate
EVs: 248 HP / 176 Atk / 168 Def
Impish Nature
- Flare Blitz
- ExtremeSpeed
- Will-O-Wisp
- Morning Sun

This arcanine set guarantees that it can switch into a psyshock/calm mind even if rocks are up and avoid the 2hko while OHKOing with flare blitz + extremespeed in return. The only thing that keeps this from being a counter is that if it sets up a CM arcanine only has an 81% chance to OHKO with flare blitz and cannot survive the flare blitz recoil after a +1 psyshock. Flare Blitz + ExtremeSpeed kills it assuming it doesn't set up a CM and you don't get a low roll. Now for some calcs:

252 SpA Life Orb Jirachi Psyshock vs. 248 HP / 168+ Def Arcanine: 129-152 (33.6 - 39.6%) -- guaranteed 3HKO after Stealth Rock and Leftovers recovery
252 SpA Life Orb Jirachi Energy Ball vs. 248 HP / 0 SpD Arcanine: 64-75 (16.7 - 19.5%) -- possible 6HKO after Stealth Rock and Leftovers recovery
252 SpA Life Orb Jirachi Moonblast vs. 248 HP / 0 SpD Arcanine: 68-79 (17.7 - 20.6%) -- possible 5HKO after Stealth Rock and Leftovers recovery

+1 252 SpA Life Orb Jirachi Psyshock vs. 248 HP / 168+ Def Arcanine: 192-227 (50.1 - 59.2%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery (keeping it from being a counter)
+1 252 SpA Life Orb Jirachi Energy Ball vs. 248 HP / 0 SpD Arcanine: 95-113 (24.8 - 29.5%) -- 0.8% chance to 3HKO after Stealth Rock and Leftovers recovery
+1 252 SpA Life Orb Jirachi Moonblast vs. 248 HP / 0 SpD Arcanine: 101-120 (26.3 - 31.3%) -- 37.2% chance to 3HKO after Stealth Rock and Leftovers recovery

Arcanine:
176 Atk Arcanine Flare Blitz vs. 0 HP / 0 Def Jirachi: 330-390 (96.7 - 114.3%) -- 81.3% chance to OHKO
176 Atk Arcanine Extreme Speed vs. 0 HP / 0 Def Jirachi: 36-43 (10.5 - 12.6%) -- possible 8HKO (10% after 96% is enough to kill it after lefties)

Overall arcanine almost always is able to kill jirachi assuming you don't get a seriously low roll.

Those add up to way more than 510 EVs lol :]

 

[slated]

o wow thanks, didn't realize that

 

[Bluwing]

Houndoom @ Houndoominite
Ability: Solar Power
EVs: 252 SAtk / 4 Def / 252 Spd
Timid Nature (+SAtk, -Atk)
- Fire Blast
- Dark Pulse
- Destiny Bond / Flame Charge / Taunt
- Nasty Plot

houndoom is an excellent check to jirachi as moonblast does a maximum of 38% unboosted and can ohko it back with fire blast or 2hko it at +1 with dark pulse, it can even use it as nasty plot bait or flame charge bait. houndoom is also quite viable in the meta tho hydreigon, blissey, and scarf fighters are annoying it has what it needs to get pass them, and i think it's incredibly underrated atm.

some calcs.

252 SpA Mega Houndoom Fire Blast vs. 0 HP / 4 SpD Jirachi: 378-446 (110.8 - 130.7%) -- guaranteed OHKO

252 SpA Mega Houndoom Dark Pulse vs. +1 0 HP / 4 SpD Jirachi: 186-218 (54.5 - 63.9%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery

252 SpA Jirachi Moonblast vs. 0 HP / 4 SpD Mega Houndoom: 94-111 (32.3 - 38.1%) -- 2% chance to 2HKO after Stealth Rock

+1 252 SpA Jirachi Moonblast vs. 0 HP / 4 SpD Mega Houndoom: 141-166 (48.4 - 57%) -- 91.8% chance to 2HKO

+3 252 SpA Jirachi Moonblast vs. 0 HP / 4 SpD Mega Houndoom: 234-276 (80.4 - 94.8%) -- guaranteed 2HKO

in my eyes this is a pretty solid check, even if it comes in on greatly boosted jirachi it can just remove it with destiny bond.

 

[pokemonisfun]

Houndoom @ Houndoominite
Ability: Solar Power
EVs: 252 SAtk / 4 Def / 252 Spd
Timid Nature (+SAtk, -Atk)
- Fire Blast
- Dark Pulse
- Destiny Bond / Flame Charge / Taunt
- Nasty Plot

houndoom is an excellent counter to jirachi as moonblast does a maximum of 38% unboosted and can ohko it back with fire blast or 2hko it at +1 with dark pulse, it can even use it as nasty plot bait or flame charge bait. houndoom is also quite viable in the meta tho hydreigon, blissey, and scarf fighters are annoying it has what it needs to get pass them, and i think it's incredibly underrated atm.

some calcs.

252 SpA Mega Houndoom Fire Blast vs. 0 HP / 4 SpD Jirachi: 378-446 (110.8 - 130.7%) -- guaranteed OHKO

252 SpA Mega Houndoom Dark Pulse vs. +1 0 HP / 4 SpD Jirachi: 186-218 (54.5 - 63.9%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery

252 SpA Jirachi Moonblast vs. 0 HP / 4 SpD Mega Houndoom: 94-111 (32.3 - 38.1%) -- 2% chance to 2HKO after Stealth Rock

+1 252 SpA Jirachi Moonblast vs. 0 HP / 4 SpD Mega Houndoom: 141-166 (48.4 - 57%) -- 91.8% chance to 2HKO

+3 252 SpA Jirachi Moonblast vs. 0 HP / 4 SpD Mega Houndoom: 234-276 (80.4 - 94.8%) -- guaranteed 2HKO

in my eyes this is a pretty solid counter, even if it comes in on greatly boosted jirachi it can just remove it with destiny bond.

A problem though would arise if Jirachi uses Moonblast on the switch in and gets the Spa drop and then proceeds to live a FB and ko you (I guess you have Destiny Bond though). The Spa drop is actually likely if it picks Moonblast because serene grace so, assuming SR is up on your side of the field, Mega Houndoom is a decent but shaky counter, especially considering that Fire Blast can miss as well.

My counter is:

Jirachi@Leftovers
Careful: 252 HP 252 SpD 4 Att
~Fire Punch
~Wish
~Iron Head
~Thunder Wave

+1 252 SpA Life Orb Jirachi Hidden Power Fire vs. 252 HP / 252+ SpD Jirachi: 153-182 (37.8 - 45%) -- guaranteed 3HKO after Leftovers recovery
0 Atk Jirachi Fire Punch vs. 0 HP / 0 Def Jirachi: 110-130 (32.2 - 38.1%) -- 94.4% chance to 3HKO
252 SpA Life Orb Jirachi Hidden Power Fire vs. 252 HP / 252+ SpD Jirachi: 101-122 (25 - 30.1%) -- 0.4% chance to 4HKO after Leftovers recovery
252 SpA Jirachi Hidden Power Fire vs. 252 HP / 252+ SpD Jirachi: 78-94 (19.3 - 23.2%) -- possible 6HKO after Leftovers recovery

The opposing Jirachi needs 2 CM boosts and Life Orb to have a chance to 2HKO you but by then you will have killed it with Fire Punch after first crippling with Thunderwave. If they elect to attack and not boost right away you can just use Wish to heal off damage.

 

[Bluwing]

A problem though would arise if Jirachi uses Moonblast on the switch in and gets the Spa drop and then proceeds to live a FB and ko you (I guess you have Destiny Bond though). The Spa drop is actually likely if it picks Moonblast because serene grace so, assuming SR is up on your side of the field, Mega Houndoom is a decent but shaky counter, especially considering that Fire Blast can miss as well.

My counter is:

Jirachi@Leftovers
Careful: 252 HP 252 SpD 4 Att
~Fire Punch
~Wish
~Iron Head
~Thunder Wave

+1 252 SpA Life Orb Jirachi Hidden Power Fire vs. 252 HP / 252+ SpD Jirachi: 153-182 (37.8 - 45%) -- guaranteed 3HKO after Leftovers recovery
0 Atk Jirachi Fire Punch vs. 0 HP / 0 Def Jirachi: 110-130 (32.2 - 38.1%) -- 94.4% chance to 3HKO
252 SpA Life Orb Jirachi Hidden Power Fire vs. 252 HP / 252+ SpD Jirachi: 101-122 (25 - 30.1%) -- 0.4% chance to 4HKO after Leftovers recovery
252 SpA Jirachi Hidden Power Fire vs. 252 HP / 252+ SpD Jirachi: 78-94 (19.3 - 23.2%) -- possible 6HKO after Leftovers recovery

The opposing Jirachi needs 2 CM boosts and Life Orb to have a chance to 2HKO you but by then you will have killed it with Fire Punch after first crippling with Thunderwave. If they elect to attack and not boost right away you can just use Wish to heal off damage.

hmm that is true ill update that, thx for noticing!

 

[Flygoner818]

Counter

Empoleon @ Leftovers
Ability: Torrent
EVs: 248 HP / 8 Def / 252 SpD
Calm / Sassy Nature
- Scald
- Roar
- Stealth Rock
- Defog / Knock Off

Empoleon is a very useful Pokemon in UU due to it's unique typing and good resistances. It makes a great switch-in to Jirachi lacking Thunderbolt and can easily pHaze them out. With the above EV spread, Empoleon can take 3 solid hits from Jirachi and be okay:

+1 252 SpA Life Orb Jirachi Psyshock vs. 248 HP / 8 Def Empoleon: 117-138 (31.5 - 37.1%) -- guaranteed 4HKO after Leftovers recovery

I'd go with a Sassy nature if you're going to use Knock Off so you can get the 3HKO. All in all, a solid Pokemon.

 

[Gr3gory]

Check

Chandelure @ Choice Scarf
Abillity: Flash Fire
EVs: 252 Spa / 252 Spe / 4 SpD
Modest Nature
- Fire Blast
- Shadow Ball
- Energy Ball
- Trick

Trick Scarf Chandelure really threats superachi quite well. If it was caught using calm mind, you can trick the scarf with his item so the jirachi is crippled for the rest of the match. Try luring a HP Fire so Chandy can OHKO a +1 rachi with fire blast with flash fire activated. Only a check since if it already boosted, Psyshock 2HKOs chandy.