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 - $10.10
Near Mint Non-English - $10.10
Lightly Played - $9.10
Lightly Played Non-English - $9.10
Played - $7.10
Played Non-English - $7.10
Heavily Played - $6.10
Heavily Played Non-English - $6.10
Damaged - $5.10
Damaged Non-English - $5.10