Covenant of Trombli holy books

The Covenant of Trombli Holy Books belong to the Covenant of Trombli. The books are written in Trionic; no one volume is complete without the other two; a passage in one abruptly stops, and continues in the next volume, and completes in the third. They contain information regarding the Cursed-one, the Groosalugg and the Com-Shuck ritual that is to take place between them. Upon each cover is an etching of a Wolf, a Ram, and a Hart, presenting the connection between the covenant and Wolfram and Hart. It seems that the books work similar to SCRQWRN, as Wesley and Fred determine they have the same spell/ability to open a portal, unlike SCRQWRN however, one must read the text of one of the books in combination with a formula (which determines the portal location) that the priests possess.