Clockwork Avian [Antiquities] Xyz/Effect monster Set: Black & White: Dark

Set: Black & White: Dark Explorers Type: Fire Rarity: Holo Rare Retreat cost: Colorless

when your opponent would Special Summon a monster: You can send this face-up card to the Graveyard

Set: Sun & Moon: Dragon Majesty Type: Dragon Rarity: Secret Rare Retreat cost: Colorless

Set: The Lost Art Promotion Card type: Normal Monster Rarity: Ultra Rare Attack: 200 Defense: 300 A forbidden right leg sealed by magic

Clockwork Avian [Antiquities] Xyz/Effect monster Set: Black & White: DarkSet: Antiquities Type: Artifact Creature Bird Rarity: Rare Cost: {5} Flying Clockwork Avian enters the battlefield with four +1 +0 counters on it. At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1 +0 counter from it. {X}, {T}: Put up to X +1 +0 counters on Clockwork Avian. This ability can't cause the total number of +1 +0 counters on Clockwork Avian to be greater than four. Activate this ability only during your upkeep.