Okay, looking at the new restrictions makes me want to take away the spellcasting, and grant a bonus that applies to any spellcasting class (Cleric, Wizard or Sorcerer). Since they lose 4 spellcaster levels instead of just two, they get a skill boost (equal to what Fey have -- now their HD are equal to Fey HD, which are universally acknowleged as kinda weak).
Removing spellcasting allows us to add +2 Wis and +2 Dex and wings.
If you want to make improved speed & maneuverability available, IMHO a set of Feats would be best. That way, Half-Celestials and Dragon Disciples could also benefit.
Improved Airspeed [General]
Pre-Req: Wings and a fly speed.
Benefit: You move +30 ft. faster when flying, or double your old fly speed, whichever is less.
Improved Airobatics [General]
Pre-Req: Wings and a fly speed.
Benefit: Your maneuverability improves one category, to a maximum of (perfect).
Avariel Racial PrC
Requirements:
Race: Elf
Language: Must speak Auran
Special: No levels in other Elven Racial PrC
Benefits:
HD: d6
BAB: Half (as Wizard)
Good Saves: Reflex, Will / Bad Save: Fortitude
Skill Points: 6 + Int bonus
Class Skills: Balance (Dex), Climb (Str), Concentration (Con), Craft (Int), Jump (Str), Knowlege (any) (Int), Listen (Wis), Profession (Wis), Spellcraft (Int), Spot (Wis), Survival (Wis) and Swim (Str).
Code:
[u]Level BAB Fort Ref Will Special Abilities[/u]
1 +0 +0 +2 +2 Air Affinity
2 +1 +0 +3 +3 Eagle Eyes
3 +1 +1 +3 +3 +2 Wis
4 +2 +1 +4 +4 Ceremony of Flight, +2 Dex
Special Abilities:
- Air Affinity (Ex): The elf becomes more attuned to the element of Air. She adds her Avariel class level to her spellcaster level when casting spells with the [Air] descriptor, to her attack and damage rolls against airborne targets, and to any saving throw against an effect with the [Air] or [Electricity] descriptor.
- Eagle Eyes (Ex): The elf's naturally excellent eyesight improves. She gains a +4 racial bonus to all Spot and Search checks. (This bonus replaces the normal elven +2 racial bonus to Spot and Search checks.)
- Ceremony of Flight: The elf gains secret knowlege from the Elven Allfather which enables her to enact the Ceremony of Flight. (Note: if you're using AU's Ceremonial Feat system, this PrC should require a Truename.) At any time after gaining this ability, she may elect to enact the Ceremony of Flight, which requires three other participants who have wings and 1,000 gp worth of precious oils and spices. (The raw materials can be gathered by hand over the course of three weeks in an enchanted forest, each week requiring a DC 25 Survival or DC 25 Knowlege (Nature) check.)
The wings provide natural flight, speed 60 ft. (good), unless normal Avarial get something different.
- Dexterity and Wisdom Increase: The Avariel gains a total of +2 Dexterity and +2 Wisdom. Each bonus is gained as though through level advancement.
-- N