Darius, The Hand of Noxus

Vigilance, Double Strike
Every time Darius deals damage to a creature, put
a Hemorrhage counter on it. Every Hemorrhage Counter causes its controller to take1 damage
every turn.
{2}{t}Destroy target creature with two Hemorrhage counters on it.
If target creature had a toughness that was less
than 6, untap Darius and recast this ability again
at no cost.