Soul of Cinder

Soul of Cinder enters the battlefield with
X +1/+1 counters on it.
Whenever Soul of Cinder is dealt damage, put
that many +1/+1 counters on it.
(It must survive the damage to get the counters.)
{t} Sacrifice target creature you control.
Put X +1/+1 counters on Soul of Cinder,
where X is target creature's power.