Derwe Coreme

A summoner begins play with the ability to summon to his side a powerful outsider called an eidolon. The eidolon forms a link with the summoner, who, forever after, summons an aspect of the same creature. An eidolon has the same alignment as the summoner that calls it and can speak all of his languages. Eidolons are treated as summoned creatures, except that they are not sent back to their home plane until reduced to a number of negative hit points equal to or greater than their Constitution score. In addition, due to its tie to its summoner, an eidolon can touch and attack creatures warded by protection from evil and similar effects that prevent contact with summoned creatures. A summoner can summon his eidolon in a ritual that takes 1 minute to perform. When summoned in this way, the eidolon hit points are unchanged from the last time it was dismissed or banished. The only exception to this is if the eidolon was slain, in which case it returns with half its normal hit points. The eidolon does not heal naturally. The eidolon remains until dismissed by the summoner (a standard action). If the eidolon is sent back to its home plane due to death, it cannot be summoned again until the following day. The eidolon cannot be sent back to its home plane by means of dispel magic, but spells such as dismissal and banishment work normally. If the summoner is unconscious, asleep, or killed, his eidolon is immediately banished. The eidolon takes a form shaped by the summoner’s desires. The eidolon’s Hit Dice, saving throws, skills, feats, and abilities are tied to the summoner’s class level and increase as the summoner gains levels. In addition, each eidolon receives a pool of evolution points, based on the summoner’s class level, that can be used to give the eidolon different abilities and powers. Whenever the summoner gains a level, he must decide how these points are spent, and they are set until he gains another level of summoner. The eidolon’s physical appearance is up to the summoner, but it always appears as some sort of fantastical creature. This control is not fine enough to make the eidolon appear like a specific creature. The eidolon also bears a glowing rune that is identical to a rune that appears on the summoner’s forehead as long as the eidolon is summoned. While this rune can be hidden through mundane means, it cannot be concealed through magic that changes appearance, such as alter self or polymorph (although invisibility does conceal it as long as the spell lasts).

A master summoner’s class level is halved (minimum 1) for the purposes of determining his eidolon’s abilities, Hit Dice, evolution pool, and so on. The eidolon otherwise functions as normal. This ability replaces the summoner’s normal eidolon ability.

A shadow caller’s eidolon is at once a thing of shadow called from the deep of the Shadow Plane and his own shadow; the two are inseparable. When his eidolon manifests, his shadow lengthens and finally detaches from him as a creature unto itself. For as long as the shadow caller’s eidolon is manifested, he and the eidolon do not have distinct shadows, regardless of the presence or absence of light. This lack of a shadow replaces the magical symbol that identifies the summoner and his eidolon. This ability alters the summoner’s eidolon ability.

Starting at 1st level, a summoner forms a close bond with his eidolon. Whenever the eidolon takes enough damage to send it back to its home plane, the summoner can sacrifice any number of hit points. Each hit point sacrificed in this way prevents 1 point of damage done to the eidolon. This can prevent the eidolon from being sent back to its home plane. In addition, the eidolon and the summoner must remain within 100 feet of one another for the eidolon to remain at full strength. If the eidolon is beyond 100 feet but closer than 1,000 feet, its current and maximum hit point totals are reduced by 50%. If the eidolon is more than 1,000 feet away but closer than 10,000 feet, its current and maximum hit point totals are reduced by 75%. If the eidolon is more than 10,000 feet away, it is immediately returned to its home plane. Current hit points lost in this way are not restored when the eidolon gets closer to its summoner, but its maximum hit point total does return to normal.

Starting at 1st level, a master summoner can cast summon monster I as a spell-like ability a number of times per day equal to 5 + his Charisma modifier. The summoner can use this ability when his eidolon is summoned. Only one summon monster spell may be in effect while the eidolon is summoned. If the summoner’s eidolon is not summoned, the number of creatures that can be summoned with this ability is only limited by its uses per day. This ability otherwise functions as the summoner’s normal summon monster I ability. Other than these restrictions, there is no limit to how many summon monster or gate spells the summoner can have active at one time. This ability replaces the summoner’s normal summon monster I ability and shield ally.

When a shadow caller uses his summon monster ability or casts the summon monster spell, he typically summons creatures from the Shadow Plane or creatures closely associated with shadow. When a creature on the summon monster spell list indicates that it is summoned with either the celestial or the fiendish template based on the alignment of the caster, the creature summoned by the shadow caller has the shadow creature template instead. Furthermore, the summon monster lists are modified in the following ways (these changes also apply to using a higher-level summon spell to summon multiple creatures from a lower-level list).
Summon Monster I: No changes.
Summon Monster II: A shadow caller cannot summon Small elementals or lemures, but instead can summon zoogs.
Summon Monster III: A shadow caller cannot summon dretches or lantern archons, but can summon augur kytons.
Summon Monster IV: A shadow caller cannot summon Medium elementals, hell hounds, hound archons, or mephits, but can summon allips, gloomwings, and shadows.
Summon Monster V: A shadow caller cannot summon babau, bearded devils, bralani azatas, Large elementals, salamanders, or xills, but can summon shadow mastiffs and shae.
Summon Monster VI: A shadow caller cannot summon Huge elementals, erinyes, lillend azatas, or succubi, but can summon cloakers.
Summon Monster VII: A shadow caller cannot summon bebiliths, bone devils, greater elementals, or vrocks, but can summon greater shadows.
Summon Monster VIII: A shadow caller can only summon derghodaemons and young umbral dragons.
Summon Monster IX: A shadow caller can only summon interlocutor kytons and nightwings.
This ability otherwise functions as and replaces the summoner’s normal summon monster spell-like abilities.