Zaroth, Lord of the Abyss

flying, trample
at the beginning of your upkeep, each player discards a card. Then, return target creature card that was put ther this turn from a graveyard to the battlefield under your control. That creature is a Demon in addition to its other types and has haste.

Whenever an opponent sacrifices a creature or discards a nonland card, create a 2/2 red and black Demon creature token with flying.