Oceanic Conversion, Atlantis Dolphin (V-SS09/SP13EN) [Revival Selection]

[G guardian]-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) during the battle that your opponent's vanguard attacked, you may pay the cost. If you do, this unit gets [Shield]+5000 for each of your rear-guards until end of that battle. If this unit's [Shield] is 30000 or greater, Counter Charge (1)/Soul Charge (1)