Guerrier de Ruée SDSE-FR002

During the damage calculation (of each player's turn), if a "Warrior" Synchro Monster ("Colossal Warrior" excluded) that you control battles an opponent's monster, you can send this card from your hand to the GY: The ATK of your battling monster becomes double its current ATK during this damage calculation only. You can banish this card from your GY, then target 1 "Synchron" monster in your GY; add it to your hand. You can only use each effect of "Reckless Fighter" once per turn.