This forum is to be used for all discussions pertaining to Obsidian Entertainment's Neverwinter Nights 2, the Mask of the Betrayer expansion pack, the Storm of Zehir expansion pack, and the Mysteries of Westgate adventure pack.
Why do you need it? If you just need to use the spell for something (although I can't recall ever needing it to complete a quest), many of your companions, particularly Elanee and Bishop, will have access to that spell.
You may have to adjust their spellbooks and rest firts, though.