pawsplay
Hero
It occurs to me from a GM perspective that the Summoner's eidolon grants a tremendous amount of world-building power to the player. Build-your-own-monster is really only the beginning. The Part-Time Sorceress could play a summoner and give her the fez-wearing bear companion she wants. The player of a 9th level Summoner could create a Small Quadruped that can deliver a line of lightning, turning your game into a drunken Pokemon parody.
But the real power of the eidolon is to make anything possible. Did you refuse to let your player choose a cat person as a playable race? Guess that? Now your player can play a Summoner with a cat person eidolon. Don't like warforged? Too bad. Warforged eidolon. Something that looks like a US Marine wielding a flamethrower? Sure, why not? Breath weapon (fire) it is. No proper devils in your setting? Now there are!
I'm not saying that to diss the summoner, but to point out that the class truly brings something new to the table: a limited form of freeform magic. Handle with care.
But the real power of the eidolon is to make anything possible. Did you refuse to let your player choose a cat person as a playable race? Guess that? Now your player can play a Summoner with a cat person eidolon. Don't like warforged? Too bad. Warforged eidolon. Something that looks like a US Marine wielding a flamethrower? Sure, why not? Breath weapon (fire) it is. No proper devils in your setting? Now there are!
I'm not saying that to diss the summoner, but to point out that the class truly brings something new to the table: a limited form of freeform magic. Handle with care.