Astium Photon Wave
■ You may only cast this card if your opponent has 4 life or less, and the «Galaxy Exalt» you are [Transform] into has 1 or less soul. ■ [Cast Cost] [Pay 2 gauge] ■ Deal 4 damage to your opponent!! This card cannot be nullified, and its damage cannot be reduced. If your opponent's life would become 0 by this card, it cannot be changed by your opponent's cards. (Unrevivable)
It is a finisher which is hard to dodge as it focuses all its energy in a single point.