Fatalis, Kingdom Razer

Flying, Annihilator 1 (Whenever this
creature attacks, defending player sacrifices a
permanent.)

Whenever an opponent sacrifices a permanent put a
+1/+1 counter on Fatalis and draw a card.

Castle Melter - Whenever an opponent sacrifices
their first permanent each turn, Fatalis deals damage
equal to the number of +1/+1 counters on it to that opponent.