It was released in October 2006 by Paradoxx Music in Brazil and SPV label Steamhammer in the rest of the world.

The title comes from the medieval text of the same name attributed to Thomas Aquinas, which was later used by Carl Jung for relating dreams to the different states of mind.

The album is heavier than its predecessors, although maintaining the regional influences, rhythms and arrangements that mark the band.

The drums were recorded in House of Audio Studios in Germany under the production of Dennis Ward; the remaining members were recorded in "Via Musique" studios in São Paulo, Brazil, under the co-production of Thiago Bianchi (Karma and Shaman).

The Japanese edition of the album comes with a bonus track, "Out of This World", which was written in honor of the first Brazilian astronaut, Marcos Pontes.