Thrall of Orcus

Level 1: Creatures gain +1/0 whenever attacking
the player with the most life or is the Monarch.
{1}{b/r} Level 2: Whenever you cast a Legendary
spell, you may pay X life. If you do, target
creature gains X -1/-1 counters.
{4}{b/r} Level 3: At the beginning of your post
combat main phase, if four or more creatures
died this turn then return target creature from
your graveyard to hand.