Nominating Pyuku as a defensive counter to Mr rime.
Pyukumuku @ Leftovers
Ability: Unaware
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Recover
- Toxic
- Soak
- Block
Pyuku can take hits from all of rime's moves and stall it with recover and toxic.
Calcs:
252 SpA Choice Specs Mr. Rime Psychic vs. 252 HP / 252+ SpD Pyukumuku: 118-139 (37.5 - 44.2%) -- guaranteed 3HKO after Leftovers recovery
252 SpA Choice Specs Mr. Rime Ice Beam vs. 252 HP / 252+ SpD Pyukumuku: 59-69 (18.7 - 21.9%) -- possible 6HKO after Leftovers recovery
252 SpA Choice Specs Mr. Rime Focus Blast vs. 252 HP / 252+ SpD Pyukumuku: 105-124 (33.4 - 39.4%) -- 20% chance to 3HKO after Leftovers recovery
252 SpA Choice Specs Mr. Rime Shadow Ball vs. 252 HP / 252+ SpD Pyukumuku: 70-83 (22.2 - 26.4%) -- possible 5HKO after Leftovers recovery
252 SpA Choice Specs Mr. Rime Psychic vs. 252 HP / 252+ SpD Pyukumuku: 79-93 (25.1 - 29.6%) -- 0% chance to 4HKO after Leftovers recovery(soaked rime)