The party came upon a Froghemoth last session, and as all 16 HD monsters, it had pretty good saves against the Magic Users spells. That didn't stop me from publicly rolling bad and having my 116 HP creature be polymorphed into a small turtle. I don't think anyone thought that would work, but why not? By the stock chart there is a decent chance of success. Anyone think I should have fudged to prevent such an anti-climactic end?