Fifth King Vvar

Haste, First Strike
Tribute 2 (When this creature enters the battlefield,
an opponent of your choice may place two +1+1
counters on it)
If tribute wasn't paid, target opponent sacrifices
a creature. Fifth King Vvar deals X damage to
that opponent, where X is the sacrificed
creature's casting cost.
{t}, {b}{b}: Sacrifice a black creature: Target
opponent loses 5 life.