Beastmorph Rules Interaction

[Jagael]

I've been tinkering with a Beastmorph Alchemist and a couple questions popped up.

1) Beastform Mutagen

https://www.d20pfsrd.com/classes/base-classes/alchemist/archetypes/paizo-al chemist-archetypes/beastmorph

I'm pretty certain I know the answer to this one, but I figure I'll put it out there. To the levels of Beastform Mutagen stack? Extrapolation below:

There are 4 levels of Beastform Mutagen (Initial, Improved, Greater, Grand) that allow you to choose abilities from the polymorph spells Alter Self as well as Beast Shape I, II, and III. However, they do not actually apply the polymorph spells to the Alchemist and as such do not seem to come under the polymorph spells do not stack caveat.

Also, whereas the Discoveries Greater and Grand Mutagen explicitly state that they alter the bonuses granted by the mutagen ability, none of the Beastform Mutagen levels state that they replace the previous levels.

The rational person in me assumes these were not meant to stack, but the gamer in me hopes that by RAW they do.

2) Abilities from Beast Shape

This should hopefully be just a yes or no question. Are the size bonuses under the polymorph spells (i.e. "If the form you take is that of a Medium animal, you gain a +2 size bonus to your Strength and a +2 natural armor bonus.") considered selectable abilities for the Beastform Mutagen or are they restricted to travel speeds, vision, etc.?\

Thanks, folks.

[Qchaos]

1) I also suppose they don't stack, I doubt it would make sense for someone to gain 10 listed abilities from beast shape when you reach the highest level

2) Since the beastform gives you "animalistic features", I would say you do not become an animal, and thus would not qualify for the size bonus associated with it. At best, I would see you would be able to have the size bonus of +2 as if using alter self.

Any official answer is welcome, this is just my opinion

[Derklord]

1) I think it does stack by RAW. Obviously, you shouldn't expect any sane GM to allow it. Probably not even the insane ones.
2) You select a number of the abilities found between "you gain the listed ability:" and the next period, with each two abilities seperated by comma.