Silver Aurum
Hello there
Rotom-Fan @ Expert Belt
Ability: Levitate
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Air Slash
- Volt Switch
- Will-O-Wisp
- Hidden Power [Water]
Rotom-Fan is a solid check to Pinsir as it cannot switch directly into Pinsir's un-boosted Stone Edge, but resists Pinsir's STAB as well as being immune to Earthquake. Rotom-Fan outpaces Pinsir by 3 points and is able to cleanly OHKO with Expert Belt boosted Air Slash.
Calcs
252 SpA Expert Belt Rotom-S Air Slash vs. 0 HP / 0 SpD Pinsir: 341-403 (125.8 - 148.7%) -- guaranteed OHKO
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252 Atk Life Orb Pinsir X-Scissor vs. 0 HP / 4 Def Rotom-S: 78-92 (32.3 - 38.1%) -- 96.3% chance to 3HKO
252 Atk Life Orb Pinsir Stone Edge vs. 0 HP / 4 Def Rotom-S: 260-307 (107.8 - 127.3%) -- guaranteed OHKO