[quote=@Dark Cloud]
<Snipped quote by Necroes>

No I understand that, but I didn't change it with the intentions to ensure the likelihood of the save. Don't argue I did because I didn't.
[/quote]
It's hard for me to believe you, when you don't inform us ahead of time that you suddenly decided to give this creature an entirely different stat block. We were never told that could happen, and if we had been, I'd have used a different spell while he was still prone.