Legendary Creature — Dwarf Cleric
4 / 5
Spirits you control get +1/+1 and have trample and haste.
Whenever another nontoken creature you control dies, exile it. If you do, create a token that's a copy of that creature, except it's a Spirit in addition to its other types and it has "When this token leaves the battlefield, return the exiled card to its owner's graveyard."
If you can't exile the card, perhaps because another effect moved the card before the triggered ability started resolving, you won't create a token.