Doom

Indestructible, defender
When Doom is drawn, it must be immediately played to the battlefield.
(This creature enters with a time counter on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When Doom is sacrificed by its own effect, create {x} 10/10 Doom's Minions tokens. Where {x} is double the amount of your opponents, these tokens enter the battlefield distributed evenly under each of your opponents control.
If Doom is removed by any effect