You can target up to 3 "Therions" monsters in your GY; Special Summon this card from your hand, and if you do, equip the targeted monsters to this card. You can discard 1 "Perpetual Engine Argyro System"; destroy all cards your opponent controls. While this card is equipped to a monster: You can Special Summon this card, then equip to this card the monster it was equipped to. You can only use each effect of "Therions' Irregular" once per turn.