Is there a problem the the eidolons in some of the handbooks?

[gavin aberhart]

I’m playing a summoner in my reign of winter group and we just finished the first session and after words one of the other players tells my that my aeon eidolon can’t have a bite attack so I look it up and sure enough it’s not on the list of subtypes that can get a bite attack I thought that was weird so I looked at all the other evolutions and sure enough all the evolutions that have a subtype Requirement
Don’t allow you to have them on any eidolon on the plane hoppers guide’blood of the beast’ blood of shadows’blood of the sea’ultimate intrigue’element masters handbook’wilderness origins’curse of the crimson throne or ultimate wilderness it kinda seems like the rules haven’t been because most of the eidolon already have the evolutions that they are apparently not allowed to have and it would make sense for them to have these evolutions examples are the aeon eidolon can’t get more claw attacks even if I get more arms even though it already has claws to begin with and normal aeons have multiple arms with claws on it is there a errata some where or is this is how it’s supposed to be?

[Name Violation]

Dont use unchained summoner then

[Melkiador]

It’s a problem with unchained in general. It’s not very backwards or forwards compatible with many other sources. As unchained is basically just house rules, it is up to your GM to decide what evolutions are suitable for your eidolon on a case by case basis.