[G guardian] (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"...
[AUTO](RC):At the end of your turn, if this unit is on a (RC) with a Dragontree marker, COST [retire this unit], choose a grade 3 or greater unit card from your drop, and put it into hand.