Warwick, Uncaged Wrath of Zaun

Lifelink
If an opponent lost life this turn, you may pay {w}{b}{g} to cast this spell.
Wherever Warwick deals combat damage to a
player, put a +1/+1 counter on it.
{3} Remove 3 +1/+1 counters from Warwick:
Destroy target creature.
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"Blood runs... they all run."