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 - $7.75
Near Mint Non-English - $7.75
Lightly Played - $7.25
Lightly Played Non-English - $7.25
Moderately Played - $6.25
Moderately Played Non-English - $6.25
Heavily Played - $4.75
Heavily Played Non-English - $4.75
Damaged - $4.00
Damaged Non-English - $4.00