Ambush Demon Stealth Rogue, Shirahagino

(Usable when both fighters' vanguards are grade 3 or greater, and the number of face up G guardians in your G zone is three or less)-Opponent Turn's Guard Step-[Choose a card with "[Heal] Heal" from your hand, and discard it] Call this card to your from face down. :[ 1 & Choose a face down G guardian from your G zone, and turn it face up] When this unit is placed on , you may pay the cost. If you do, choose one of your vanguards, and until end of turn, it gets ":When a grade 3 or less unit is retired from , you may return that card to the bottom of your deck.", and this unit gets +10000.