3+ Beast, Beast-Warrior, and/or Winged Beast monsters Cannot be Special Summoned from the Extra Deck unless you have 3 or more "Tri-Brigade" Spells/Traps in your GY. Your opponent cannot activate cards or effects when you Special Summon a monster(s). When a monster declares an attack: You can banish this card, also banish all cards your opponent controls. If this card is sent to the GY: You can send 1 Beast, Beast-Warrior, or Winged Beast monster from your Extra Deck to the GY. You can only use this effect of "Tri-Brigade Arms Bucephalus II" once per turn.