Eidolon Base Forms
Each eidolon has a base form that determines its starting size, speed, AC, attacks, and ability scores. All natural attacks are made using the eidolon’s full base attack bonus unless otherwise noted (such as in the case of secondary attacks). Eidolon attacks add the eidolon’s Strength modifier to the damage roll, unless it is its only attack, in which case it adds 1-1/2 times its Strength modifier. These base forms also note any free evolutions that base form possesses. The bonuses from these free evolutions are already factored into the starting statistics. Alternatively, any one of these base forms can be used to make a Small eidolon. If the eidolon is Small, it gains a +2 bonus to its Dexterity score. It also takes a –4 penalty to its Strength and a –2 penalty to its Constitution. It also gains a +1 size bonus to its AC and attack rolls, a –1 penalty to its CMB and CMD scores, a +2 bonus on its Fly skill checks, and a +4 bonus on its Stealth skill checks. Reduce the damage of all of its attacks by one step (1d6 becomes 1d4, 1d4 becomes 1d3). If this choice is made, the eidolon can be made Medium whenever the summoner can change the eidolon’s evolution pool (which causes it to lose these modifiers for being Small).
| Summoner | Evolutions |
Aquatic
The aquatic base form follows all of the normal rules for base forms.
Starting Statistics
Size Medium; Speed 20 ft., swim 40 ft.; AC +4 natural armor; Saves Fort (good), Ref (good), Will (bad); Attack bite (1d6); Ability Scores Str 16, Dex 12, Con 13, Int 7, Wis 10, Cha 11
Free Evolutions
Bite, improved natural armor, gills, swim (2), and can select the mount evolution.
Avian
The avian base form is birdlike in shape.
Starting Statistics
Size: When summoned, an avian eidolon is Small unless it spends 2 points from its evolution pool. At 5th level, a Medium or larger avian eidolon’s flight speed increases by 40 feet, as if it had 2 more points in the flight evolution; Speed 30 ft., fly 30 ft. (good); AC +2 natural armor; Saves Fort (bad), Ref (good), Will (good); Attacks 2 claws (1d3); Ability Scores Str 12, Dex 16, Con 13, Int 7, Wis 10, Cha 11.
Free Evolutions
Claws, flight, limbs (legs).
Biped
Starting Statistics
Size Medium; Speed 30 ft.; AC +2 natural armor; Saves Fort (good), Ref (bad), Will (good); Attack 2 claws (1d4); Ability Scores Str 16, Dex 12, Con 13, Int 7, Wis 10, Cha 11
Free Evolutions
Claws, limbs (arms), limbs (legs).
Qruped
Starting Statistics
Size Medium; Speed 40 ft.; AC +2 natural armor; Saves Fort (good), Ref (good), Will (bad); Attack bite (1d6); Ability Scores Str 14, Dex 14, Con 13, Int 7, Wis 10, Cha 11
Free Evolutions
Bite, limbs (legs) (2).
Serpentine
Starting Statistics
Size Medium; Speed 20 ft., climb 20 ft.; AC +2 natural armor; Saves Fort (bad), Ref (good), Will (good); Attack bite (1d6), tail slap (1d6); Ability Scores Str 12, Dex 16, Con 13, Int 7, Wis 10, Cha 11
Free Evolutions
Bite, climb, reach (bite), tail, tail slap.
Tauric
Tauric eidolons appear as conjoined creatures with a humanoid upper body on a qrupedal lower body.
Starting Statistics
Size: When summoned, a tauric eidolon is Small unless it spends 2 points from its evolution pool, in which case it is Medium; Speed 40 ft.; AC +2 natural armor; Saves Fort (good), Ref (bad), Will (good); Attacks 2 claws (1d4); Ability Scores Str 14, Dex 14, Con 13, Int 7, Wis 10, Cha 11.
Free Evolutions
Claws, limbs (arms), limbs (legs) (2).
