Spy

When Spy enters the battlefield put a Sapper
counter on target artifact an opponent controls.
Its abilities can't be activated. Its controller sacrifices it at the beginning of the next turns
end step.
{2}{b}, return Spy to your hand: Destroy target creature, it can't be regenerated. Activate this
only any time you could cast a sorcery.
"I murdered your toys as well."
by PBRunny