Living Metal

Equipped creature has:
"{0}: Choose one -
Equipped creature get +0/+1 until
or
Equipped creature gets +1/+0 until end of turn.
This ability can be activated only once each turn"
Equip 1 (1: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)