Cho'gath

Fear, Trample
Whenever a creature that Cho'gath has dealt
combat damage to this turn dies, put a +1/+1
counter on Cho'gath.
{t}, Cho'gath deals X damage to target creature,
where X is equal to 2 plus the number of +1/+1
counters on Cho'gath. If this ability causes the
creature to die, put a +1/+1 counter on
Cho'gath.