[quote=@EviiPaladin]
Not to be 'that guy' but Xyz have always required the materials to follow the same restrictions. As such, the materials should probably be 2 Level 4 FIRE Monsters or 2 Level 4 Monsters.
[/quote]

To be fair, I've made an exception before with there having to be 1 LIGHT and 1 DARK monster for another Xyz Monster he created.