Hephis, Speaker of Oblivion

Whenever Hephis, Speaker of Oblivion enters
the battlefield or attacks, return target creature
card at random from your graveyard to the battlefield. That creature gains haste.
Whenever Hephis deals combat damage to a
player, return target creature card at random
from that player's graveyard to the battlefield
under your control unless that player pays 2 life.
"Your time has come."