Okay, so as far as I can tell, I've taken the two steps necessary to obtain the ritual spell. However, I can't figure out any way to use it to get into the forest temple. Am I missing something?
Viewing post in Caliross, The Shapeshifter's Legacy comments
No, if you have the ritual spell, and you cast it in front of the temple inside the forest near Tarkas during a full moon, you should get the door to open (you can tell there is a full moon because a symbol above the door appears). I just tested it and it worked, so I am not sure what could be the problem.