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 - $9.60
Near Mint Non-English - $9.60
Lightly Played - $8.70
Lightly Played Non-English - $8.70
Played - $6.70
Played Non-English - $6.70
Heavily Played - $5.80
Heavily Played Non-English - $5.80
Damaged - $4.80
Damaged Non-English - $4.80