Clockwork Avian [Antiquities] Colorless If the player does

If the player does

Set: Legends Type: Artifact Rarity: Rare Cost: {6} At the beginning of your upkeep

sacrifice Thran Quarry

{T}: Destroy target black creature

Set: Limited Edition Beta Type: Enchantment — Aura Rarity: Common Cost: {B} Enchant creature

Clockwork Avian [Antiquities] Colorless If the player doesSet: 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.