[ 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" from your hand, and discard it] Call this card to your (GC) from face down. [AUTO]:[Soul Blast (1)] When this unit is placed on (GC), you may pay the cost. If you do, until end of that battle, this unit gets [Shield]+5000, then, if the number of your rear-guards is one or less, or four or more, this unit gets [Shield]+15000.