Holy Dragon, Laserguard Dragon

(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. :When this unit is placed on , if you have one or more grade 2 rear-guards, this unit gets +5000 until end of that battle.