Armageddon Clock

At the beginning of your upkeep, put a doom counter on this artifact.
At the beginning of your draw step, this artifact deals damage equal to the number of doom counters on it to each player.
: Remove a doom counter from this artifact. Any player may activate this ability but only during any upkeep step.

EDHREC rank #18352

USD reference: $6.25 (~₱393.76)