Most half-celestials are born of a mortal who loved a good outsider, but powerful holy magic can also create one.
“Half-celestial” is an inherited or acquired template that can be added to any living, corporeal creature with an Intelligence score of 4 or more. A half-celestial creature retains the base creature's statistics and special abilities except as noted here.
CR: HD 5 or less, as base creature + 1; HD 6–10, as base creature + 2; HD 11 or more, as base creature + 3.
Alignment: Any good.
Armor Class: Natural armor improves by +1.
Defenses/Qualities: A half-celestial gains darkvision 60 ft.; immunity to disease; +4 racial bonus on saves vs. poison; acid, cold, and electricity resist 10; DR 5/magic (if HD 11 or less) or 10/magic (if HD 12 or more); and SR equal to CR + 11 (maximum 35).
Speed: Unless the base creature flies better, the half-celestial flies at twice the base creature's land speed (good maneuverability).
Special Abilities: A half-celestial gains the following special abilities:
Once per day, as a swift action, the half-celestial can smite evil as a paladin of the same level as its Hit Dice. The smite persists until target is dead or the half-celestial rests.
A half-celestial with an Int or Wis score of 8 or higher has a cumulative number of spell-like abilities depending on its Hit Dice. Unless otherwise noted, an ability is usable once per day. Caster level equals the creature's HD (or the caster level of the base creature's spell-like abilities, whichever is higher).
Abilities: A half-celestial gains a +4 bonus on three ability scores of its choice and a +2 bonus on the other three.
Skills: A half-celestial with racial Hit Dice has skill points per racial Hit Die equal to 6 + its Intelligence modifier. Racial class skills are unchanged from the base creature's. Skill ranks from class levels are unaffected.