Cannot be Normal Summoned/Set. Must first be Special Summoned by banishing 3 monsters with different Attributes from among face-up monsters you control or in your GY. Cannot be destroyed by card effects. You can declare 1 Attribute from among the monsters on the field; destroy all monsters on the field of that Attribute, and if you do, neither player can Special Summon monsters of the declared Attribute until the end of the next turn. You can only use this effect of "Archnemesis Protos" once per turn.