Hutijin
At will: alter self (can become Medium when changing his appearance), animate dead, detect magic, hold monster, invisibility (self only), lightning bolt, suggestion, wall of fire
3/day: dispel magic
1/day each: heal, symbol (hopelessness only)
Titivilus
At will: alter self, animate dead, bestow curse, confusion, major image, modify memory, nondetection, sending, suggestion
3/day: greater invisibility (self only), mislead
1/day: feeblemind, symbol (discord or sleep only)
Okay, considering the above and the SLAs the 1E versions had, how's this for a start:
Adonides
Adonides's innate spellcasting ability is Charisma {spell save DC 22). He can innately cast the following spells, requiring no material components
At will: animate dead, cone of cold, detect magic, ice storm, lightning bolt (5th level spell slot for 10d6 lightning damage)[?], pyrotechnics (4d8 damage), wall of ice
3/day: dispel magic [maybe move 5th-slot lightning bolt or 8th-slot ice storm here?]
1/day each: heal (self or by touch only), ice storm (8th level spell slot for 6d8 bludgeoning damage plus 4d6 cold damage)[?], symbol (stunning only)
I considered tweaking up the slot of the at-will
ice storm probably by a spell slot or two to 3d8 or 4d8 bludgeoning plus 4d6 cold and not having a 1/day superstorm, but preferred Adonides having a augmented "storm of rage" option.
Indeed, I'm leaning towards making the 8th-slot ice storm a 3/day option rather than 1/day since cold damage might not be effective. Most opponents who expect to face him will take precautions against frostbite, so it may mainly be the bludgeoning that contributes to his DPR.
EDIT: After running the numbers it looks like the 8th-slot
ice storm is only withing CR 21 budget if it's 1/day, so forget the "make it 3/day" idea. Am now leaning towards moving the 5th-slot
lightning bolt to 3/day and not giving Adonides at-will electricity. :ENDEDIT
The original had
detect lie and
know alignment so I'm wondering if we could interpret that as a Special Trait. Like, Adonides can see if someone's lying, good or evil if they're within 60 feet, maybe with a Charisma saving throw to temporarily thwart the ability?