Must be Synchro Summoned, and cannot be Special Summoned by other ways. During your Main Phase: You can destroy all other cards on the field, also monsters you control other than this card cannot attack for the rest of this turn. During either player's Battle Phase, when a Spell/Trap Card is activated: You can negate the activation, and if you do, destroy that card, and if you do that, this card gains 500 ATK. You can only use each effect of "Tyrant Red Dragon Archfiend" once per turn.
Atom 1.0
