Stealth Beast, Instant Swapper (G-BT13/087EN) [Ultimate Stride]

Shadowstitch -[AUTO](RC) Generation Break 1 :[Counter Blast (1) & Retire this unit] At the end of the battle that this unit attacked a vanguard and did not hit, you may pay the cost. If you do, search your deck for up to one card with the same card name as your vanguard, call it to (RC), shuffle your deck, and at the end of that turn, put the called unit on the bottom of your deck.