Goodmen, Gentles, my Lords, in the best exemplification of the heroic stories you have found the Villain, battled him and his minions, plundered them of their treasure then returned victorious. But Now you discover a greater horror.. Lawyers.. Lawyers...
Call me "Creature", lostling, half-dragon of the planes; ie Corporal John Hearthfeld, Esq. - Assassin/ Enforcer "Rat-snake" .
Starts with scene excerpts, followed by working notes, ends with actual used Character Sheet data.
If a creature is transformed into another creature (say, a human into a dog), then that creature will become more and more accustomed to the new form until a point is reached where reversing the spell is impossible. A second transformation is possible, but the creature will have to go through the whole process again.