[Molog]

Played around with transformation a bit a while ago. Transformations are various animals, the various drakes, a chimera, foul spawns are also possible but they always seem to come with feeblemindedness. Think ritual of rebirth is a better option if you want your immobile pretender to become mobile. Just teleport somewhere you drown to avoid getting any afflications.

Transformation doesn't go bad very often. Advantages are reduced upkeep and stronger forms for your mages.
Disadvantages are most transformation only have two misc slots and crappy precision.