Major: Glyph of Permanent Invisibility
After becoming invisible you stay invisible permanently until taking damage or casting a spell.
Minor: Glyph of Polymorph-Self
You can now cast any of your polymorph spells on yourself, doing so will not cause you to gain health or lose control of your character, but will allow you to take on the form of this animal until taking damage or casting another spell. Can only be done out of combat.