Mau, Khalfan Scholar

Flying
Mau, Khalfan Scholar enters with {x} charge
counters on it. {x} cannot be less than 1.
{1}{u} Mau, Khalfan Scholar Phases out
{t} Add an amount of green, black, or blue mana
equal to the amount of charge counters on Mau, Khalfan Scholar.
While Mau, Khalfan Scholar is tapped, it is not a creature.