Celesphere Decision (S-BT04/0033EN) (S-BT04)

You may only cast this card if your opponent's life is 4 or less, and an "Astrodragon" with "Cross" in its card name is on your center.
[Cast Cost] [Pay 4 gauge reduced by 1 for each attack of your "Astrodragon" during this turn] Deal 4 damage to your opponent!! This damage cannot be reduced.