Galactica Xiphos

[REQUIREMENT]If your opponent has a face-up Level 7 or 8 monster on their field, equip this card to 1 face-up Galaxy Type monster on your field. [EFFECT] The equipped monster gains ATK equal to [the number of face-up Normal Monsters on your field] x 300. If the equipped monster is "Galactica Oblivion", it gains 1000 more ATK.