Quest for the Holy S***!

Equipped creature has ": Add one mana of any color." Equip

This creature enters with two -1/-1 counters on it. , : Move a counter from target creature onto a second target creature. ( is the untap symbol.)

Whenever a creature you control becomes tapped, you may put a quest counter on this enchantment. As long as there are four or more quest counters on this enchantment, untap all creatures you control during each other player's untap step.