Ouroboros Blood Ritual
System: Pathfinder | SRD
Level: 9
School: conjuration (healing)
Casting time: 90 minutes
Components: V, S, M (a gallon of blood harvested from an ouroboros within the previous month), SC (up to 8)
Skill checks: Heal DC 34, 4 successes; Knowledge (arcana) DC 34, 3 successes; Knowledge (planes) DC 34, 2 successes
Range: touch
Duration: instantaneous
Saving throw: none
Spell resistance: no
Backlash: The caster and secondary casters become exhausted.
Failure: All casters are affected by the ouroboros’s ruinous blood special attack. The dead body can’t be the target of the ouroboros blood ritual in the future.
The caster uses the ouroboros blood to paint complex mathematical equations on the ground surrounding a dead body (or if lacking a body, in the area where the body was slain). Upon the ritual’s completion, the dead body is restored to life, as per true resurrection. Unlike that spell’s limitation, there is no limit as to how long the body has been dead before it can be restored to life in this manner, but bodies whose souls have been judged and sent on to the afterlife (GM’s discretion) cannot be restored to life via this ritual. A creature can be restored to life via an ouroboros blood ritual only once through all time.
Source: Bestiary 6 pg. 207