Ged, Myr-Salas's Assassin

Firststrike
When Ged enters the battlefield, destroy target creature that dealt damage this turn.
{1}: Target creature gets -1/-1 until end of turn. Activate this ability only up to 3 times each turn.
"All who displease the Great Master must be
eliminated. It is my job to remove them as quietly
as possible."—Ged, The Assassin