An elemental ally is a druid who has crafted powerful bonds of trust and friendship with one ally from each of the four primary elemental planes. Elemental allies are similar to genie-binders.
At 1st level, an elemental ally has four elemental eidolons she can summon, one each for the elements of air, earth, fire, and water. Their abilities and statistics are determined using the rules for elemental eidolons for the Unchained Summoner class, as if the elemental ally were a summoner of her druid level, except they gain no additional evolution pool (just those evolutions from their base form and base evolutions from their subtype).
Each of the four elementals has its own base form, skills, and feats. The elemental ally can summon one of these elementals with the same 1-minute ritual a summoner normally uses to do so. The elemental ally can’t summon an eidolon or cast summon nature’s ally if she currently has an eidolon summoned. She also can’t summon an eidolon if she currently has a creature summoned through other means. If one of the elemental ally’s eidolons is killed, she cannot summon any eidolons for 24 hours. The elemental ally can dismiss her eidolon as a standard action.
As the elemental ally gains levels, her elemental eidolons’ base statistics and base evolutions increase as if her druid level were her summoner level. The eidolons gain the darkvision, link, share spells, evasion, ability score increase, devotion, multiattack, and improved evasion abilities at the appropriate levels, but never gain an evolution pool. Abilities and spells that grant additional evolution points to eidolons do not function for elemental eidolons, though any ability that would grant evolution points to an animal companion does work. The elemental ally does not gain life link or any other class features a summoner gains in relation to her eidolon.
This ability replaces nature’s bond and wild shape.
An elemental ally can improve the attitude of a creature of the elemental subtype. This ability functions just like a Diplomacy check to improve the attitude of a person. The elemental ally rolls 1d20 and adds her druid level and her Charisma modifier to determine the elemental empathy check result.
To use elemental empathy, the elemental ally and the elemental must be able to study each other, which means that they must be within 30 feet of one another under normal conditions. Generally, influencing an elemental in this way takes 1 minute, but as with influencing people, it might take more or less time.
This ability replaces wild empathy.
At 4th level, an elemental ally gains resist acid, cold, electricity, and fire 5.
This ability replaces resist nature’s lure.