Twin Eidolon (Su)
At 20th level, a summoner and his eidolon share a true connection. As a standard action, the summoner can assume the shape of his eidolon, copying all of its evolutions, form, and abilities. His Strength, Dexterity, and Constitution scores change to match the base scores of his eidolon. He can choose to have any gear that he carries become absorbed by his new form, as with spells from the polymorph subschool. Items with continuous effects continue to function while absorbed in this way. The summoner loses his natural attacks and all racial traits (except bonus feats, skills, and languages) in favor of the abilities granted by his eidolon’s evolutions. The summoner retains all of his class features. The summoner can keep this form for a number of minutes per day equal to his summoner level. This duration does not need to be consecutive, but it must be spent in 1-minute increments. The summoner can end this effect as a free action.
Eidolons An eidolon’s abilities are determined by the summoner’s level and by the choices made using its evolution pool. Table 2–9: Eidolon Base Statistics determines many of the base statistics of the eidolon. Each eidolon possesses a base form that modifies these base statistics. Eidolons are outsiders for the purpose of determining which spells affect them. Class Level: This is the character’s summoner level. HD: This is the total number of 10-sided (d10) Hit Dice the eidolon possesses, each of which gains a Constitution modifier, as normal.
BAB: This is the eidolon’s base attack bonus. An eidolon’s base attack bonus is equal to its Hit Dice. Eidolons do not gain additional attacks using their natural weapons for a high base attack bonus.
Good/Bad Saves: These are the eidolon’s base saving throw bonuses. An eidolon possesses two good saving throws and one bad saving throw, determined by the creature’s base form.
Skills: This lists the eidolon’s total skill ranks. An eidolon can assign skill ranks to any skill, but it must possess the appropriate appendages to use some skills. Eidolons with Intelligence scores above the base value modify these totals as normal (an eidolon receives a number of skill ranks equal to 6 + its Intelligence modifier per HD). An eidolon cannot have more ranks in a skill than it has Hit Dice. Eidolon skill ranks are set once chosen, even if the creature changes when the summoner gains a new level. Feats: This is the total number of feats possessed by an eidolon. Eidolons can select any feat that they qualify for, but they must possess the appropriate appendages to use some feats. Eidolon feats are set once chosen, even if the creature changes when the summoner gains a new level. If, due to changes, the eidolon no longer qualifies for a feat, the feat has no effect until the eidolon once again qualifies for the feat.
Armor Bonus: The number noted here is the eidolon’s base total armor bonus. This bonus may be split between an armor bonus and a natural armor bonus, as decided by the summoner. This number is modified by the eidolon’s base form and some options available through its evolution pool. An eidolon cannot wear armor of any kind, as the armor interferes with the summoner’s connection to the eidolon. Str/Dex Bonus: Add this modifier to the eidolon’s Strength and Dexterity scores, as determined by its base form. Some options available through the eidolon’s evolution pool might modify these scores.
Evolution Pool: The value given in this column is the total number of points in the eidolon’s evolution pool. Points from this pool can be spent on a wide variety of modifications and upgrades that add new abilities, attacks, and powers to the eidolon. Whenever the summoner gains a level, the number in this pool increases and the summoner can spend these points to change the abilities of the eidolon. These choices are not set. The summoner can change them whenever he gains a level (and through the transmogrify spell). Max. Attacks: This indicates the maximum number of natural attacks that the eidolon is allowed to possess at the given level. If the eidolon is at its maximum, it cannot take evolutions that grant additional natural attacks. This does not include attacks made with weapons.
Special: This includes a number of abilities gained by all eidolons as they increase in power. Each of these bonuses is described below.