Entrusted Arm, Shirou (FS/S77-E004S SR) [Fate/Stay Night [Heaven's Feel] Vol.2]

[AUTO] When this card attacks, choose 1 of your characters, and that character gets +2500 power until end of turn. [AUTO] [CXCOMBO] When this card's battle opponent becomes [REVERSE], if"Battle of Determination" is in your climax area, this card gets the following ability until the end of your opponent's next turn. "[AUTO] When this card is frontal attacked, you may choose this card and 1 of your other characters, and return them to your hand."