Silvered Fist

Equipped creature get +0/+2 and is an artifact creature.
{1}: Artifact creatures you control get -1/+1 until end of turn.
{5}, Sacrifice Silvered Fist: Search your library for
a card called Mirari, put it onto the battlefield, then shuffle your library.
Equip {2}
Karm never raised it to harm, only in defense.