You can target up to 3 "Therion" monsters in your GY; Special Summon this card from your hand, and if you do, equip them to this card. You can discard 1 "Endless 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 the monster this card was equipped to, to this card. You can only use each effect of "Therion Irregular" once per turn.
NM-Mint Unlimited - $0.20
Lightly Played Unlimited - $0.20
Moderately Played Unlimited - $0.20
Heavily Played Unlimited - $0.20
Damaged Unlimited - $0.10
NM-Mint Unlimited Non English - $0.20
Lightly Played Unlimited Non English - $0.20
Moderately Played Unlimited Non English - $0.20
Heavily Played Unlimited Non English - $0.20
Damaged Unlimited Non English - $0.10
NM-Mint 1st Edition - $0.30
Lightly Played 1st Edition - $0.20
Moderately Played 1st Edition - $0.20
Heavily Played 1st Edition - $0.20
Damaged 1st Edition - $0.20
NM-Mint 1st Edition Non English - $0.30
Lightly Played 1st Edition Non English - $0.20
Moderately Played 1st Edition Non English - $0.20
Heavily Played 1st Edition Non English - $0.20
Damaged 1st Edition Non English - $0.20