Conquering Supreme Dragon, Conquest Dragon (G-BT02/S02EN)

Stride (Released when both players' vanguards are grade 3 or greater!) -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. [ACT](VC)[1/Turn]:[Choose a face down card named "Supreme Conquering Dragon, Conquest Dragon" from your G zone, and turn it face up] If the number of face up cards in your G zone is two or more, choose one rear-guard in your opponent's front row, retire it, and until end of turn, all units in your front row get [Power]+5000 for each open (RC) in your opponent's front row.