Enma Stealth Dragon, Maguntenbu (G-BT11/S19EN) [Demonic Advent]

[ Stride ]-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] Stride this card on your (VC) from face down. Dominate -[ACT](VC)[1/Turn]:[Counter Blast (1) & Choose a face down card from your G zone with the same card name as this unit, and turn it face up] Choose one of your opponent's rear-guards, and it gets [Power]+3000 for each face up card in your G zone until end of turn. Dominate that unit as [Stand], it attacks another of your opponent's units, and at the end of that battle, retire the dominated unit. (You may use its abilities if you pay the cost)