Liliana, Heretical Healer (SDCC 2015 Exclusive)

Lifelink Whenever another nontoken creature you control dies, exile Liliana, Herectical Healer, then return her to the battlefield transformed under her owner's control. If you do, put a 2/2 black Zombie creature token onto the battlefield. // 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."