Hofri Ghostforge is a mythic Legendary Creature — Dwarf Cleric card from Magic Online Promos (PRM), collector number 90278.
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."