Caius the Shadow Monarch [GLD2-EN033] Ultra Rare Code of the Duelist when an Effect Monster's effect

when an Effect Monster's effect activates: You can send 1 Equip Card equipped to this card to the Graveyard

Set: Duel Terminal 3 Card type: Effect Monster Rarity: Rare Attack: 1800 Defense: 300 When this card is Normal or Special Summoned

Set: ZEXAL World Duel Carnival Promos Card type: Normal Spell Rarity: Ultra Rare Target 1 Machine-Type monster in your Graveyard with 3000 or more ATK

equip this card to it

Caius the Shadow Monarch [GLD2-EN033] Ultra Rare Code of the Duelist when an Effect Monster's effectSet: Gold Series 2009 Card type: Effect Monster Rarity: Ultra Rare Attack: 2400 Defense: 1000 When this card is Tribute Summoned, remove from play 1 card on the field. If it was a DARK Monster Card, inflict 1000 damage to your opponent.