[Always]<Player> "Yamato" <Valid> Trash <Effect> This card's Cost is reduced by 1. However, the Cost cannot be equal to or less than 0. [Always]<Valid> Square <Effect> Your Charge doesn't have any limit. [Always]<Player> "Yamato" <Valid> Square <Effect> If there are 2 or more cards in your Charge, this card gets Power +2000, and gains the following ability. " [Auto]<Valid> Square <Trigger> This card attacks. <Effect> Choose a Cost 4 or less [Diabolus] in your Trash, and return it to hand."