[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] Heal" from your hand, and discard it] Call this card to your (GC) from face down.
[AUTO]:When this unit is placed on (GC), if your opponent's attacking unit's [Power] is 20000 or greater, this unit gets [Shield] +5000 until end of that battle.