But this isn't a "new race". Aasimar are already a blend of two races to start with. What your basis given was the "diluting" of the aasimar with more human blood over an extended time. To me, that logic is not a "new" race. Which is why I said don't make them aasimar sourced but instead a brand new race.
Perhaps you're right. Still, someone is bound to notice how close a race with a Celestial touch is to an Aasimar, so the question is this - how can this race be given flavor? I have a few ideas.
This race is TOTALLY different in gameplay mechanics when compared to the Aasimar, and there is only a slight similarity between the natures and heritages of Aasimar and this race. Now, for an explanation on how the race came to be - instead of a divine HERITAGE, what about a divine INFLUENCE? Instead of a Celestial actually becoming the parent, what about a newborn being "blessed" by a celestial, in order to carry out the will of their influencers on the Material Plane, amid the civilizations of the world? My view on influence of the races -
Aasimar - a Celestial ancestor conceives a child with a mortal, resulting in a half-celestial. Further generations still feel the power of the divine heritage, but the influence of the celestial is not strong enough to produce a half-celestial, resulting in an Aasimar.
New Celestial Humanoid Race - Child is born to normal mortal parents (they might even be evil in alignment), and is then selected by a celestial for whatever reason, giving them a touch of celestial power, in order to carry out the will of the celestial race amongst the civilizations of the material planes. Sort of a "Chosen One", if you will. This allows for a main race, with several subraces, depending on the divine influence.
We are left with something like this (rough draft) -
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Celestialchosen (Angelchosen, Archonchosen, Eladrinchosen, or Guardinalchosen) (working titles)
- Ability Score Adjustments: +2 Cha, -2 Con.
- Size and Type: Medium Humanoid (human).
- Speed: 30 ft.
- Low-light Vision.
- Spell-like Ability:
Light 3/Day, caster level is equal to class levels. A 15 minute meditation (title in the works), similar to a sorcerer's spell preparation, must be completed each day to refresh the ability. (This ability is pretty much identical to the Searching For The Dragon meditation performed by Kobolds.)
- +1 to Diplomacy and Gather Information checks. Angel influence - +2 to Sense Motive. Archon influence - +2 to Intimidate. Eladrin influence - +2 to Bluff. Guardinal influence - +2 to Survival.
- Celestial Resistance (Ex): Choose one energy type, as determined by your celestial ancestor. You gain racial energy resistance 5 against the chosen type. Angel - Acid, Cold, Electricity, Fire. Archon - Electricity. Eladrin - Cold, Electricity, Fire. Guardinal - Cold, Electricity, Sonic.
- Code Of The Celestial: A Celestialchosen who shifts to an evil alignment loses racial ability adjustments, low-light vision, the ability to cast Light as a spell-like ability, any racial skill bonuses, Celestial Resistance, the ability to speak Celestial, and they have no favored class. A Celestialchosen can regain their racial features through use of an
Atonement spell. A Celestialchosen that shifts to an evil alignment and makes peaceful contact with an evil outsider may change their race to Fiendchosen (details on this later; basically the opposite of a Celestialchosen - influenced by general Fiends, Demons, Devils, and Yugoloths), gaining all the racial features of a Fiendchosen. The racial influence of a Fiendchosen is determined by the race of the evil outsider with which peaceful contact is made (any evil outsider other than a Devil, Demon, or Yugoloth counts as a general Fiend).
- Automatic Languages: Common and Celestial. Bonus Languages: Any (other than Abyssal, Infernal, and secret languages, such as Druidic). A Celestialchosen's involvement in diplomacy and different cultures allow them to learn a wide variety of languages. However, Celestialchosen refuse to utter the unholy languages of Demons and Devils.
- Favored Class: Paladin, but alignment requirements vary depending on celestial influence. Angel - Paladin (substitute required Paladin alignment (LG) to LG
OR NG
OR CG). Archon - Paladin (LG). Eladrin - Paladin (substitute Paladin's required LG alignment to CG). Guardinal - Paladin (substitute Paladin's required LG alignment with NG).
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This is a VERY rough draft, but I like the concept of a human who has the responsibility of representing the Celestial races on the material plane - makes for interesting roleplaying opportunities, especially if the character doesn't always enjoy (or even want) this huge responsibility. Plus, a showdown between a Celestialchosen and a Fiendchosen of opposite alignments would be CRAZY. I think that this qualifies for LA +0, but I will need suggestions and comments. After some details in this race get worked out, perhaps I'll design the Fiendchosen.