Shirayuki, Blade Weasel

Ninjutsu {w}{u}{2}({w}{u}{2}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Shirayuki, Blade Weasel deals combat damage to a player, put a +1/+0 counter on a Terran creature you control or a creature you control with White in its colors.