Legendary Creature — Human Cleric Legendary Planeswalker — Liliana
Liliana, Heretical Healer
Whenever another nontoken creature you control dies, exile Liliana, Heretical Healer, then return her to the battlefield transformed under her owner's control. If you do, create a 2/2 black Zombie creature token.
Liliana, Defiant Necromancer
+2: Each player discards a card.
−X: Return target nonlegendary creature card with converted mana cost X from your graveyard to the battlefield.
−8: You get an emblem with "Whenever a creature dies, return it to the battlefield under your control at the beginning of the next end step."