Amera, Steel Angel

Amera, Steel Angel enters play with a flying counter,
a shield counter and three +1/+1 counters.

{t}, remove a counter: add three mana to your mana
pool. It can be of any combination of white, blue or
colorless and cannot be used to cast spells.

"As the Artifacts were removed from their pedestals,
she held up the plane by herself..."