Project NU Break This Core! (Week N/A: All cores are unviable; ban Flamigo)

[xterminasian23]

Rotom-Mow @ Miracle Seed
Level: 100
Modest Nature
Tera Type: Grass
Ability: Levitate
EVs: 204 Def / 252 SpA / 52 Spe
IVs: 0 Atk
- Leaf Storm
- Nasty Plot
- Pain Split
- Will-O-Wisp

I don't think Pain Split and Wisp is really needed here but I just added it because I thought it would be fun!

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Rotom-Mow vs Gligar Matchup

With tera Grass and a Miracle Seed Mowtom has a 50% chance to oneshot Gligar (This odds only gets better if Gligar uses Tera Water; Leaf Storm oneshots no questions asked). If needed, you can use Wisp on Gligar to burn it and absorb more hits (we don't have to worry about miracle seed getting knocked off because we are 1 point faster than the Gligar):

252+ SpA Miracle Seed Tera Grass Rotom-Mow Leaf Storm vs. 252 HP / 0 SpD Eviolite Gligar: 306-360 (91.6 - 107.7%) -- 50% chance to OHKO

If this isn't enough, we can run Nasty Plot into Leaf Storm. Say our Miracle seed gets knocked off, we still cleanly oneshot the Gligar:

+2 252+ SpA Tera Grass Rotom-Mow Leaf Storm vs. 252 HP / 0 SpD Eviolite Gligar: 508-598 (152 - 179%) -- guaranteed OHKO

Gligar does not do anything back to Rotom-Mow:

Gligar calcs (Burn not even needed it seems):

0 Atk Gligar Knock Off vs. 0 HP / 204 Def Tera Grass Rotom-Mow: 29-35 (12 - 14.5%) -- possible 7HKO
0 Atk Gligar U-turn vs. 0 HP / 204 Def Tera Grass Rotom-Mow: 64-76 (26.5 - 31.5%) -- guaranteed 4HKO

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Rotom-Mow vs Vaporeon Matchup

Without Tera, Vaporeon dies to Leaf Storm 100% of the time:

252+ SpA Miracle Seed Tera Grass Rotom-Mow Leaf Storm vs. 252 HP / 0 SpD Vaporeon: 672-792 (144.8 - 170.6%) -- guaranteed OHKO

With Tera Fairy, Rotom-Mow kills Vaporeon with Nasty Plot into Leaf Storm:

+2 252+ SpA Miracle Seed Tera Grass Rotom-Mow Leaf Storm vs. 252 HP / 0 SpD Tera Fairy Vaporeon: 670-790 (144.3 - 170.2%) -- guaranteed OHKO

Or Pain Split (Puts Vaporeon at around 76% health) into +0 Leaf Storm:

252+ SpA Miracle Seed Tera Grass Rotom-Mow Leaf Storm vs. 252 HP / 0 SpD Tera Fairy Vaporeon: 336-396 (72.4 - 85.3%) -- 75% chance to OHKO

Vaporeon does not do squat back to Rotom-Mow, and even if it does, Pain Split will heal Rotom-Mow back to health:

0 SpA Tera Fairy Vaporeon Scald vs. 0 HP / 0 SpD Tera Grass Rotom-Mow: 44-52 (18.2 - 21.5%) -- possible 5HKO

 

[Shengineer]

Ice Punch Toxicroak



Toxicroak @ Life Orb/Leftovers/Air Balloon
Ability: Dry Skin
Tera Type: Dark / Steel
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly/Adamant Nature
- Swords Dance
- Drain Punch / Close Combat
- Ice Punch
- Sucker Punch / Knock Off / Gunk Shot

Toxicroak is famously one of the best mons in the tier at exploiting Vaporeon, thanks to its ability Dry Skin providing a complete immunity to its most common (and sometimes only) attacks. However, when Gligar is involved, its ability to make progress can be heavily mitigated. This all changes when Toxicroak uses Ice Punch as a coverage option, allowing you to OHKO fully physically defensive Gligar after a Swords Dance.

With Stealth Rock active, an Adamant-natured Toxicroak is able to OHKO Gligar at +2, while running Life Orb allows for more speed with a Jolly nature and no requirement for rocks. It's hard to go wrong with the classic Tera Dark + Sucker Punch combo. However, Air Balloon is a fun alternative item for Toxicroak that further improves your Gligar matchup, making it even safer to set up in its face, while Tera Steel gives clutch resistances to Psychic, Flying, and Dragon-Type attacks from other various threats.

+2 252+ Atk Toxicroak Ice Punch vs. 252 HP / 252+ Def Eviolite Gligar: 292-344 (87.4 - 102.9%) -- 87.5% chance to OHKO after Stealth Rock
+2 252 Atk Life Orb Toxicroak Ice Punch vs. 252 HP / 252+ Def Eviolite Gligar: 348-411 (104.1 - 123%) -- guaranteed OHKO