Defensive Mono-Water Core for ORAS with Mega Slowbro:
Slowbro-Mega @ Slowbronite
Ability: Shell Armor
Shiny: Yes
EVs: 252 HP / 16 Def / 240 SpD
Calm Nature
IVs: 0 Atk
- Iron Defense
- Calm Mind
- Ice Beam
- Rest
Lanturn @ Leftovers
Ability: Volt Absorb
Shiny: Yes
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
- Heal Bell
- Toxic
- Scald
- Volt Switch
Tentacruel @ Black Sludge
Ability: Liquid Ooze
Shiny: Yes
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
- Acid Spray
- Scald
- Rapid Spin
- Toxic Spikes
Swampert @ Leftovers
Ability: Torrent
Shiny: Yes
EVs: 80 HP / 176 Atk / 252 Def
Impish Nature
- Earthquake
- Waterfall
- Stealth Rock
- Roar
Descriptions:
Mega-Slowbro:
My favourite Mega Slowbro set: mixed wall MegaBro. Iron Defense and Calm Mind are boosts. Ice Beam has no immunities. Rest is recovery that removes status. You are also bulky asf, so you can live 2 hits usually. Useful to switch in on something like generic screens Klefki, set up a couple of boosts, then Rest off the paralysis/tiny damage it does with Foul Play.
Lanturn:
The first electric immunity, and that gets healed by electric. Heal Bell is very useful for healing status on your pokemon so that they're not crippled. Toxic stalls for damage. Scald is to FISH (see what I did there?) for burns against steel teams. Slow Volt Switch is useful to bring one of your other Pokemon in. You can also run full SpD with a Calm Nature.
Tentacruel:
Specially defensive Tentacruel is amazing. Toxic Spikes pairs well with Swampert to set hazards, while spinning them away from your own team with Rapid Spin. Acid Spray reduces the opponents SpD stat by 2 so it is VERY annoying for the other team. Scald is to go for burns and take advantage of the SpD drops caused by Acid Spray. It is neutral to grass attacks, which is helpful as the rest of the core is weak to grass. Liquid Ooze also punishes Giga Drain/Horn Leech Pokemon that want to recover health by making them lose the amount of health they would recover.
If you don't like Toxic Spikes you can run this set:
Tentacruel @ Assault Vest
Ability: Liquid Ooze
Shiny: Yes
EVs: 240 HP / 252 SpA / 16 SpD
Modest Nature
- Acid Spray
- Rapid Spin/Sludge Wave
- Scald
- Giga Drain
This set gives you more SpD by using Assault Vest. Acid Spray again reduces the opposing Pokemon's SpD, Rapid Spin remvoes hazards, Scald is STAB, Giga Drain is recovery and hits thinks like Gastrodon hard. Sludge Wave is usable over Rapid Spin if you don't care about hazards. Generally the first set is preferred, however, for the residual damage Toxic Spikes offers.
Swampert:
Swampert sets rocks for your team and works really well as a hazard setter with Tentacruel. It is also immune to electric type attacks, giving you two options for switch-ins to electric type attacks. Roar racks up residual damage through rocks--useful against flying/bug teams. 176 Attack allows it to switch in and OHKO Mega Mawile if it doesn't invest in Def/HP:
176 Atk Swampert Earthquake vs. 4 HP / 0 Def Mega Mawile: 228-270 (94.2 - 111.5%) -- guaranteed OHKO after Stealth Rock
Waterfall and EQ are obviously STABs so you're not taunt bait.
How to Use:
Generally you will lead with Tentacruel/Swampert to set hazards at the beginning of the game, and depending on what you think their lead will be (if it is a special attacker, use Tentacruel. If it is a physical attacker, use Swampert). Bring in Lanturn if you get statused so you can wall more stuff later. Slowbro-Mega should typically be brought in late-game or against something that can't hurt it to set up and wall the shit out of everything. Toxic Spikes complements this MegaBro set really well, as it is stally asf, so it appreciates the residual damage.
Good Partners:
Choice Band Sap Sipper Azumarill is an excellent partner to this core, giving it another immunity.
Greninja is also an excellent partner to KO the strong frail Pokemon that threaten this core.
Keldeo is another good attacker to complement this stally core. Can also essentially go mixed with Hydro Pump/Secret Sword and can handle Dark attacks aimed at Mega Slowbro.
Wish passing helps keep your Pokemon healthy.
Some of these Pokemon can be set up bait--Quagsire prevents sweeps with his derpiness.
Threats:
A Strong Volt-Turn Core:
A strong VoltTurn core is hard for this core to handle as it has a physical attack (U-Turn) and a special one (Volt Switch). Both are SE on MegaBro as well. Landorus/Thundurus are the main offenders of this. How To Handle: Swampert can usually handle the U-Turns and is immune to Volt Switch, but usually Thundy carries Grass Knot, which kills it. Greninja can usually outspeed and KO with Ice Beam (Scarf variants will always outspeed both of these Pokemon). Be sure to keep rocks up to also help prevent this.
Some Psychic teams run Screens Espeon. Screens not only decrease your attack power, but it also usually run Psyshock/Grass Knot (or at least mine does). Psyshock murders Tentacruel, Grass Knot murders Swampert, and you can't set hazards because of Magic Bounce. The best thing you can do is put in Band Azumarill and spam Knock Off. It is even more useful if you switch in on a predicted Grass Knot--then you have 2.25x power--which is more power than Huge Power, one of Azumarill's other options for an ability.
Thundurus in general kills this core. Between Thunderbolt, Volt Switch, and Grass Knot, it basically murders everything in this core. Greninja can outspeed and kill it with Ice Beam, but you're screwed if it runs Prankster T-Wave. Just hope for the Ice Beam kill, and then switch to Lanturn to Heal Bell.
Mega Venusaur can stall your team with Leech Seed. Also, attacking sets with EQ/Giga Drain sorta screw your team. Your best bet is to use Tentacruel--Liquid Ooze hurts it instead of healing it if it has Leech Seed, and you can weaken with Acid Spray before netting the KO. If it has EQ, your best bet is to switch in with Sap Sipper Band Azu on a predicted Seed/Giga Drain, and hope it doesn't run Sludge Wave, and/or Extrasensory it to death with Greninja. If you run physical ninja, the Liechi Berry/Sub/Acrobatics set will win for you, especially as being behind a sub means you can't be seeded.
Again, if it is the stally seed set, wear down with Tentacruel. Otherwise, you should wear it down with Greninja (either physical ninja with Power-Up Punch, or special ninja with HP Fire).
Importable:
Slowbro-Mega @ Slowbronite
Ability: Shell Armor
Shiny: Yes
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Iron Defense
- Calm Mind
- Ice Beam
- Rest
Lanturn @ Leftovers
Ability: Volt Absorb
Shiny: Yes
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
- Heal Bell
- Toxic
- Scald
- Volt Switch
Tentacruel @ Black Sludge
Ability: Liquid Ooze
Shiny: Yes
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
- Acid Spray
- Scald
- Rapid Spin
- Toxic Spikes
Swampert @ Leftovers
Ability: Torrent
Shiny: Yes
EVs: 80 HP / 176 Atk / 252 Def
Impish Nature
- Earthquake
- Waterfall
- Stealth Rock
- Roar
Recommended Other Options: (Sets that are Importable):
Azumarill @ Choice Band
Ability: Sap Sipper
Shiny: Yes
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
IVs: 0 SpA
- Aqua Jet
- Knock Off
- Ice Punch
- Play Rough
Keldeo-Resolute @ Choice Specs
Ability: Justified
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Hydro Pump
- Secret Sword
- Icy Wind
- Hidden Power [Grass]
Alomomola @ Leftovers
Ability: Regenerator
Shiny: Yes
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
IVs: 0 SpA
- Wish
- Protect
- Knock Off
- Bounce
Greninja @ Liechi Berry
Ability: Protean
Shiny: Yes
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
IVs: 0 SpA
- Substitute
- Acrobatics
- Power-Up Punch
- Night Slash
Greninja @ Choice Scarf
Ability: Protean
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Ice Beam
- Grass Knot
- Extrasensory
- Hidden Power [Fire]
Quagsire @ Leftovers
Ability: Unaware
Shiny: Yes
EVs: 232 HP / 28 Def / 248 SpD
Impish Nature
- Stockpile
- Stone Edge/Recover
- Infestation
- Yawn
Notes:
Obviously, you can't run both Greninja sets.
Quagsire's EVs are weird, but this lets its defenses be approximately even--you switch in on something that set up, use Stockpile 1-3 times, trap with Infestation, then use Yawn to put it to sleep. Stone Edge is chosen because it has no immunities. Recover is usable for, obviously, Recovery. Usually the better option as Infestation is an attack (making you not Taunt bait) as otherwise you have no recovery outside of Lefties (and Knock Off is common). You can run a standard Quagsire as well--this is just my creation that I like.
The other sets function pretty much exactly how they look.
Also, if someone could teach me how to use hide blocks, that would be great.