Barrage Giant Cannon, Bullish Primer (G-RC02/040EN) [Revival Collection]

[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] Generation Break 1:[Choose a face-down G guardian from your g zone, and turn it face up] When this unit is placed on (GC), you may pay the cost. If you do, this unit gets [Shield]+5000 for each of your open circle until end of that battle.