From Pathfinder #202: Severed at the Root, which isn't enabled.

Drain Planar Connection

RITUAL 5

UNIQUE

Cast 1 day

Cost six sets of rare herbs, each worth a total of 50 gp

Secondary Casters 5

Primary Check DC 31 Nature (master)

Secondary Checks DC 26 Diplomacy or Nature or Occultism

You draw the planar energy from Idyllis, through the ley lines, and into the six latticework spheres.

Critical Success You sever Idyllis's connection to the Plane of Wood permanently.

Success You sever Idyllis's connection to the Plane of Wood for 10 years.

Failure You sever Idyllis's connection to the Plane of Wood for 1 year, but the ritual backfires, dealing 4d12+26 force damage to all secondary casters (DC 26 basic Reflex save).

Critical Failure The ritual backfires as a failure but doesn't sever Idyllis's connection.

Pathfinder #202: Severed at the RootORC