Clockwork Avian [Antiquities] Archenemy Schemes These mighty bulwarks thwart ground-based

These mighty bulwarks thwart ground-based troops

at the beginning of each of your upkeeps for the rest of the game

and that player can't activate abilities that aren't mana abilities

Sword of War and Peace deals damage to that player equal to the number of cards in their hand and you gain 1 life for each card in your hand

Clockwork Avian [Antiquities] Archenemy Schemes These mighty bulwarks thwart ground-basedSet: 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.