Orefu, Lantern of Conjuring

Spells you cast cost {1} more to cast for each
charge counter on Orefu, Lantern of Conjuring.
{t}: Add {c}{c}{c} to your mana pool. Put a charge
counter on Orefu, Lantern of Conjuring.
{1}, {t}: Remove a charge counter from Orefu,
Lantern of Conjuring.
It watches with eyes divine and intentions masked.