Effect
3 Level 4 monsters Once per turn, during your opponent's Main Phase: You can detach 1 Xyz Material from this card; this card gains ATK and DEF equal to the total ATK of all face-up Xyz Monsters your opponent currently controls (this is a Quick Effect).
The monster effect of "Unformed Void, the Fiction King" is a Quick Effect that can only be activated during the opponent's Main Phase. (This effect does not target.)
When activating this effect, detach 1 Xyz Material from this card as a cost.
The monster effect of "Unformed Void, the Fiction King" cannot be activated if there are no face-up Xyz Monsters in the opponent's Monster Zone.
The ATK/DEF gained from the monster effect of "Unformed Void, the Fiction King" remains applied as long as "Unformed Void, the Fiction King" remains face-up in the Monster Zone.
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