Description
either player can Special Summon monsters of the same type (Ritual/Fusion/Synchro/Xyz/Link) as a monster they control for the rest of this turn, also, if you do not control more than 1 each of Ritual, Fusion, Synchro, Xyz, and/or Link Monsters, all Ritual, Fusion, Synchro, Xyz, and Link Monsters you currently control gain 500 ATK. You can only activate 1 "Simult Archfiends" per turn.