[G Guardian]-Opponent Turn's Guard Step-[COST][Discard a card with [Heal] from hand], and call this card to your (GC) from face down.
[CONT](GC):During the battle your opponent's vanguard attacked, if your damage zone has two or more face down cards, this unit gets [Shield] +10000, then, if your damage zone has three or more face down cards, this unit gets [Shield] +10000.