Armageddon Clock [Antiquities] Alpha Edition these devices doubled the output

these devices doubled the output of Amrit Vatyam's forges

you may search your library for an Elemental card

defender of its creatures

nonland card

Roaring Flame deals 6 damage to each opponent

Armageddon Clock [Antiquities] Alpha Edition these devices doubled the outputSet: Antiquities Type: Artifact Rarity: 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.