2 Tuners + 1+ non-Tuner monsters Must be Synchro Summoned. 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 the Battle Phase, when a Spell/Trap Card is activated (Quick Effect): 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.