Serpent Bond

Casting Serpent Bond causes the mage to temporarily polymorph into a snake, allowing hom or her to pass through narrow spaces. Also, in a battle the mage can use its snake-form poisoned fangs as weapons. Additionally, a small snake is the perfect spy.

This spell's description is misleading, as no actual serpent is needed for it.

Trivia

 * This spell can be used to break triggers in the game. Casting it before entering Gorlab Swamp brings the companions to the Dream Realm, so the player can take the items back to the real world. It also allows keeping Mortegro in the party.