2 Tuners + 1 or more non-Tuner monsters
Must be Synchro Summoned, and cannot be Special Summoned by other ways. You can only use each of these effects of "Tyrant Red Dragon Archfiend" once per turn.
● During your Main Phase 1: You can destroy all other cards on the field, also, for the rest of this turn, other monsters you control cannot attack.
● 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.