Actually, I did notice your proposal but then forgot about it.25th level wizard with spontaneous illusion spells is fine. I don't see really any justification in the original monster for the extra 10th level cleric casting, though.
Cleric Sounds good. Oracular stuff for some reason is always godly in my mind. Like they are communing with a higher power.
Andromidus cannot create mortal men from clay as Prometheus does, but he can transmute any nonliving substance found on the Prime Material Plane. These transmutations are permanent as long as the items remain on the Prime Material Plane. Turning a gold earring into a pebble, for example, would be quite easy for him to do, as would be the reverse act. Up to 1,000 gp weight of material may be transmuted per day, but he refuses to use this power for the sake of anyone’s personal gain (though his dreaming subconscious creates situations in which this is so). Magical items cannot be so created (though his illusions may make items appear to be magical).
Those 4 domains will be fine.
Before we get to the long lists of spells, shall we tackle this?
I guess that'll do! Thanks!
The thing about the dream illusions is that I can't tell if that's a separate ability or if somehow he is casting spells while he sleeps. After all, his waking illusion ability is tied to spell casting. It would almost make sense to give him some additional illusion ability beyond or instead of the "spontaneously casts illusions" ability.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.