Armageddon Clock [Antiquities] Turtle Set: Vanguard Series Type: Vanguard

Set: Vanguard Series Type: Vanguard Rarity: Rare Sacrifice a permanent: Return target creature to its owner's hand

Set: Avacyn Restored Type: Sorcery Rare Cost: {3}{R}{R} Each player discards their hand

Set: Junior Super Series Type: Land Rarity: Rare Whenever City of Brass becomes tapped

Note the type of mana spent to pay this activation cost

Set: Aether Revolt Prerelease Promos Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

Armageddon Clock [Antiquities] Turtle Set: Vanguard Series Type: VanguardSet: Antiquities Type: Artifact Uncommon Cost: {6} At the beginning of your upkeep, put a doom counter on Armageddon Clock. At the beginning of your draw step, Armageddon Clock deals damage equal to the number of doom counters on it to each player. {4}: Remove a doom counter from Armageddon Clock. Any player may activate this ability but only during any upkeep step.