Begins a ritual that sacrifices a random participant's health to summon a doomguard. Requires the caster and 4 additional party members to complete the ritual. In order to participate, all players must right-click the portal and not move until the ritual is complete.
Ritual of Doom was a Warlock spell that sacrificed a significant portion of a participant's health for the benefit of summoning a Doomguard.
The Doomguard summoned from the ritual was under the control of the warlock for 15 minutes and despawned after that time had elapsed. Originally, one of the participating players of the Ritual of Doom had to be sacrificed so the Doomguard could appear, and then the demon had to be enslaved or otherwise it would attack the party. The original ritual is closer to the Doomguard that spawned from the proc of [Curse of Doom], which needed to be enslaved and would break free from enslavement after a certain amount of time had elapsed.
[Curse of Doom], which needed to be enslaved and would break free from enslavement after a certain amount of time had elapsed.
[Grimoire of Doom] or Quest:Suppression.
Patch 4.0.1 (2010-10-12): Removed. Doomguard is now summoned through the spell 
YouTube Ritual of Doom
