Clockwork Avian [Antiquities] Nightmare Demon Activate only during your upkeep

Activate only during your upkeep and only once each turn

(It's an artifact with "{T}

Set: Mirage Type: World Enchantment Rarity: Rare Cost: {1}{G}{G} At the beginning of each player's upkeep

Battle doesn't need a purpose

Clockwork Avian [Antiquities] Nightmare Demon Activate only during your upkeepSet: 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 only during your upkeep.