4-Point Evolutions
The following evolutions cost 4 points from the eidolon's evolution pool.
An eidolon learns to cast dimension door as a spell-like ability once per day. The caster level for this evolution is equal to the eidolon's Hit Dice. The save DC for this spell is 10 + 1/2 the eidolon's HD + the eidolon's Charisma modifier. The eidolon must have a Charisma score of at least 14 to take this evolution. The summoner must be at least 13th level before selecting this evolution.
Once per day, an eidolon can become incorporeal for 1 round per summoner level. While in this form, the eidolon gains the incorporeal subtype and incorporeal quality. It only takes half damage from corporeal sources as long as they are magic (it takes no damage from nonmagical weapons and objects). Likewise, its spells or spell-like abilities deal only half damage to corporeal creatures. Spells and other effects that do not deal damage function normally. The summoner must be at least 15th level before selecting this evolution.
An eidolon can pinpoint living creatures with ease. The eidolon notices and locates living creatures within 60 feet, just as if it possessed the blindsight evolution. The eidolon must possess the undead appearance evolution to take this evolution. The summoner must be at least 11th level before selecting this evolution.
No Breath
An eidolon no longer needs to breathe. The eidolon does not breathe, and is immune to effects that require breathing (such as inhaled poison). This does not give immunity to cloud or gas attacks that do not require breathing. The summoner must be at least 11th level before selecting this evolution.
An eidolon learns to cast a powerful spell as a spell-like ability. Select one spell from the following list: arcane sight, create food and water, cure serious wounds, daylight, fireball, fly, gaseous form, lightning bolt, major image, stinking cloud, tongues, or water breathing. This spell can be cast once per day as a spell-like ability. The caster level for this evolution is equal to the eidolon's Hit Dice – 2. The save DC for this spell is 10 + 1/2 the eidolon's HD + the eidolon's Charisma modifier. The eidolon must have a Charisma score of at least 13 and must possess the major magic evolution to take this evolution.
The summoner must be at least 11th level before selecting this evolution. This evolution can be selected more than once. Each time an eidolon selects this evolution, it applies to a new spell from the above list.