Spells

The majority of spells in Planes of Power come from turning in Ethereal Parchment (level 61-62), Spectral Parchment (level 63-64), and Glyphed Rune Word (level 65) to a spell merchant in the Library in Plane of Knowledge. When you hand in one you receive a random spell for the class and while the parchments are No Drop, the spells themselves are tradable. There is no level restriction nor do you need to turn in the spells to your class, meaning a 58 Warrior could give a Spectral Parchment to Elementalist Somat and get Maelstrom of Thunder. Here are the vendors for each class:

The exception are the Imbue spells. Each Imbue spell is created by combining a Spell: Imbue Diamond scroll, a Raw Diamond, and a specific reagent inside a planar jewelry kit. The combine is no fail and not class restricted. The reagents needed are as follows:

The Imbue spells consume another Raw Diamond and reagent when cast to produce colored diamonds which can be use in various tradeskills.