If memento triggers innards out:
The Ins And Outs of Innards Out:
Pyukumuku @ Chesto Berry
Ability: Unaware
EVs: 248 HP / 128 Def / 132 SpD
Bold Nature
- Curse
- Baton Pass
- Rest
- Memento
You curse, then use Baton pass to transfer the stat changes, then, later it comes back, heals up with...