Prospatheia Idea-drone

:[ 1 & Choose one of your grade 2 or less guardians, and bind it face up] When your unit is put on during the battle that your opponent's vanguard attacked, you may pay the cost. If you do, this unit gets +15000 until end of that battle. :[ 1 & Choose a card from your drop zone, and bind it face up] At the end of your turn, you may pay the cost. If you do, 1, choose one of your rear-guards, and bind it face up. If a card was bound, your opponent chooses one of his or her rear-guards, and puts it on the bottom of his or her deck.