Chimecho @ Leftovers
EVs: 248 HP / 124 Def / 136 SpD
IVs: 0 Atk
- Perish Song
- Protect / Yawn/ Substitute
Thanks to USUM, Chimecho is another perish trapper with reliable recovery, probably the best under UU (Arceus in AG/ Ubers, Celebi in OU/ UU).
the forth is to stall the 2 turns for the song to finish. Yawn has an added bonus for Ghost types, maybe they'll switch when drowsed, so you can Wrap the switch-in.
Counters are Ghost types, Taunt, strong super-effective moves, switching moves (except Baton Pass), & Soundproof mons.