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.
Near Mint - $11.80
Near Mint Non-English - $11.80
Lightly Played - $10.70
Lightly Played Non-English - $10.70
Played - $8.30
Played Non-English - $8.30
Heavily Played - $7.10
Heavily Played Non-English - $7.10
Damaged - $5.90
Damaged Non-English - $5.90