Indestructible (Effects that say "destroy" don't destroy that permanent. An indestructible creature can't be destroyed by damage.)
Equipped creature gets +3/+3 and has vigilance (Attacking doesn't cause this creature to tap.) and ", Sacrifice this creature: Add three mana of any one color."
Equip (: Attach to target creature you control. Equip only as a sorcery. This card enters unattached and stays on the battlefield if the creature leaves.)