By casting a revelation spell, a wizard immediately understands, in unerring detail, the complete meaning of an omen or portent. This spell can be used only when the spellcaster sees the omen, and must be used while the portent is remains visible.
The revelation spell cannot predict the future, except as indicated by the portent, nor even identify who sent the omen. The spell only reveals the exact meaning of the omen.
Should a spellcaster use the spell in an attempt to understand an unusual event that is not an omen, the spell fails, although the caster does learn that there is no great importance to the supposed sign.
Notes: Very rare spell, originally from the Arthurian section of Legends & Lore.