Dunamis Messiah

(Active if you have one or more face up G units in total on your or G zone): 1 At the end of the battle that this unit boosted ([Boost]), you may pay the cost. If you do, choose up to one locked card, unlock it, and lock this unit. Choose one of your units, and it gets +4000 until end of turn. (The locked card is turned face down, and cannot do anything. It is unlocked and turns face up at end of the owner's turn)