Armageddon Clock [ME4]

Armageddon Clock

Artifact

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.: Remove a doom counter from Armageddon Clock. Any player may activate this ability but only during any upkeep step.