Bastion, Relic of the Uprising

Powered (This creature gets +1/+1 for every third
energy counter.)
When Bastion, Relic of the Uprising enters the battlefield, you get {e}{e}{e}{e} (four energy
counters).
Pay {e}{e}: Until end of turn, Bastion becomes
a Turret with base power and toughness 8/4,
defender, first strike, and reach.