Cavern of the Great Scepter

{t}: Add {1} to your mana pool.
Sacrifice Cavern of the Great Scepter while you control a Wizard: You get a Legendary colorless Equipment artifact token named Requium Staff of Merlin with "Indestructible. Equipped creature gains +2/+2 Hexproof and {t}: Copy target spell. Choose an appropriate target for the copy. Equip {3}."