synthesist and feats

[darthspader]

hey guys i have a question.

first off i realize the DM rules is generally law and they can house rule what they want.

my current DM has stated "core rules" nothing tweaked, stick to the rules of the book/s. with that in mind, he is allowing a synthisist.

where we get into a differing of opinion is weather or not i can make use of monster feats. in particular, the improved natural attack, and multi attack feats. the requirements are "natural weapons" plus the BAB of +4 on imp attack.

the DMs argument is that the base guy, my "dude" dosent have a natural attack, and therefore cant take the feats. my argument, on the other hand is when he is wearing the eidolon he DOES have natural attacks, and since normally the eidolon WOULD qualify for those if it was not a worn or bonded creature, why is it diffirent?

what im looking for here is something in the rules that supports either stance, aside from the "DM is god, may house rule, etc" - once i present this if the stance is unchanged, then so be it - ive no intent of pushing matters. i just like to have facts and research done before making a case like this.

[Hendelbolaf]

If you qualify when you are in your synthesized mode, then you can use the feat. When you do not have him summoned in/on you then you will not have access to the feat as you do not qualify for it.

It is a little like, but not exactly, if you qualify for Power Attack but then get your strength drained below 13 and have no access to the feat.

As always you will wnat to get the blessings of your DM first anyway.

[Buri]

In the synthesist fused eidolon entry there is this:

Fused Eidolon wrote:

The synthesist also gains access to the eidolon’s special abilities and the eidolon’s evolutions.

If having access to natural attacks does not equal you having natural attacks then I don't know what would convince them.