Imperishable Hydro Anchor

Play this with [COST][Energy-Blast 3]! Choose a grade 3 or less card from your drop, call it to (RC), and it gets "[AUTO](RC)[1/Turn]:When this unit attacks a grade 3 or greater unit, if it is the fifth battle of this turn, this unit gets [Power]+10000 until end of that battle." until end of turn.