Karl, the Left Hand Sentinel

Vigilance, Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets
-1/-1 until end of turn)

{w/u}{r}: Karl, the Left Hand Sentinel gains +1/+0 until end
of turn.
{w/u}{u}: Karl, the Left Hand Sentinel gains +0/+1 until end
of turn.

Why would I cover my hands? They're not a valid target.
— Karl, moments before being sniped in the hand