Liliana, Heretical Healer // Liliana, Defiant Necromancer

Lifelink 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.

[+2]: Each player discards a card. [−X]: Return target nonlegendary creature card with mana value 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."