Questions about the beast bonded witch's

[Just a Guess]

The questions are specific for familiars of this witch archetype.

If the familiar learns languages through skill ranks gained from high int that it puts into linguistics or through a transfered feat, can it speak them if it uses twin soul to take over a humanois capable of speach?

If the witch and the familiar share a body using twin soul does the familiar still need to feel for presences as described under magic jar or can it use the witch's eyes to choose a target it wants to posses?

Can the witch still use Familiar Form to assume the familiar's form if the familiar's body is dead and it has possessed another creature's body?

Does possessing someone via twin soul (which is su) allow spell resistance?

[VarisianViscount]

I've often looked at that archetype and tried to figure it out, so I think I can provide you with some insight.

Familiars can't learn languages, except maybe the sage archetype, as all others use their master's skill ranks. The way ranks in Linguistics and familiars are usually handled seems to be that the familiar knows whatever language its master learned with that rank. As for speaking languages, the only way to be sure per RAW is if it has the decoy archetype. All others UNDERSTAND languages, but don't know how to ARTICULATE them. Even ravens, thrushes, and such can only speak "because magic". So even if you gave it the Cosmopolitan feat (which grants two languages and class skills), it would only be able to understand, not articulate them. Of course when looking at this from a roleplay perspective, it's totally fine to have the familiar practice using the body's vocal cords etc. and eventually gaining the ability to speak, so ask your DM.

Magic Jar is one mess of a spell, so players are encouraged to swap all instances for Possession instead.

The familiar's original body is still an animal, right? This also means that depending on how you interpret twin soul, you better bring that body back to life, or you'll both be dead once the witch dies as well. In case of the witch being dead, she can hit her body with reincarnate for free (as an arcane caster, she ignores the 1000 gp oils DF, though many will rule it to be a printing error; then again, cyclic reincarnation also lists the oils as the DF, so this may be intentional for both spells). However, whether such spells work with the soul still around is anyone's guess. I've also come across the interpretation that twin soul kicks in once the body gains the "dying" condition, but once the body is actually dead, the soul of the witch/familiar dies as well. Make of that what you will.

Generally, supernatural abilities don't allow spell resistance, though saving throws still apply of course.

[Fuzzy-Wuzzy]

Have to disagree a bit about familiars learning languages. The OP brought up the one place where they do gain skill ranks of their own, namely one rank (for their one HD) per point of high Int mod, for a grand total of two ranks when their master is 19th-20th level. If the familiar puts a rank of that into Linguistics it gets any language it wants (subject to the same restraints as any other character, e.g., not Druidic), not limited to those of its master.

I do agree on knowing a language vs speaking the language. They won't have the physical capability for the latter in their normal form. Get them into a form that can speak, via twin soul or a polymorph effect or whatever, and they'll be fine.

Since Pathfinder considers knowing a language the same as being literate in it, their normal form might be able to painstakingly write out a simple message in the dirt with a paw or beak or face. YMMV.

Just a Guess wrote:

Can the witch still use Familiar Form to assume the familiar's form if the familiar's body is dead and it has possessed another creature's body?

The ability doesn't say anything about "while the familiar is alive," so sure.