Diablo, Lord of Terror

Fear, trample, devour 3.
3 XP: Whenever a creature dies, put a soul
counter on Diablo. Diablo gets +0/+1 for each
soul counter on him.
7 XP: Menace. When Diablo dies, suspend him
with 10-X time counters on him where X
is how many soul counters were on him.
10 XP: When Diablo enters the battlefield or
attacks, deal 1 damage to each opponent and
each creature they control.