Ritualist
Ritualists channel otherworldly energies that summon allies from the void. Mystic binding rituals bend those allies to the Ritualist's will. Ritualists hood their eyes to commune with spirits that grant great power and protection. The energy they channel drives Ritualist skills, which can enhance the deadliness of an ally's weapon and wreak havoc on an enemy's Health. The Ritualist can also use the remains of the dead to defend the living, not by reanimating corpses as a Necromancer would, but through the ritual use of urns and ashes. Where the Ranger lives as one with the spirit world, the Ritualist can and will be its master.

Ritualist Attributes

Spawning
(Primary) For each point of Spawning the Ritualist takes, summoned or animated creatures gain 4% more Health. Spawning also makes many Ritualist skills related to spirit creatures more effective.

Communing: Increase the Communing attribute to boost the Ritualist's
ability to summon and command otherworldly allies.

Restoration Magic: Spend points in Restoration Magic to add to the duration and effectiveness of Ritualist skills that heal an ally's injuries.

Channeling Magic: Build up the Ritualist's Channeling Magic attribute to increase the duration and effectiveness of skills that inflict spiritual harm on enemies.
Thx to GW site for info