During this Ritual the Earth Cleric summons the attention of a specific ancestor. To do so he must know the name of an ancestor, and have some of his remains. When the spell is successfully cast the ancestor takes the hand of the Cleric and draws him through the veil into the Spirit World. The Cleric becomes a Spirit for the duration of the spell. While in this form they can perceive Spirits as if they were solid creatures (though they can still tell a Spirit from a non-Spirit) and may converse with them. Like a ghost they cannot affect the real world, but they can still be damaged by any effect that normally damages a Spirit.
Entering the Spirit World is a dangerous proposition. The Cleric will attract the attention of Spirit creatures, who are often hostile. The Spirit transformation also affects the Cleric's senses, making things hard to perceive. Especially they perceive emotions as having the same solidity and reality as physical things. Finally the transformation of their Clay may have long lasting effects. The Cleric must make a Spirit roll vs. a 14. If they fail then they lose one Spirit. On the other hand entering the Spirit World may allow the Cleric to lay a Ghost to rest (by speaking to it, or by learning what it seeks), or combat a Spirit threat that cannot otherwise be faced.
The spell lasts for a maximum of 10 minutes per Level, though the Cleric may return to the real world sooner if they wish.