
Mojorat |

Useful extra limbs are not really a recognized monster power. Nothing gives or denies it as far as I know.
So check the higher level polymorphing powers like monsterois physique to see.if a multi limb thing is required.
Hiweverbi sonrbrbink orbison. If the kassath had claws on it'd hands alter self would give you 4 claw attacks.
So basically I think it works but without naturally having the limbs you wont qualify for multiweapon fighting.

Selgard |

Hiweverbi sonrbrbink orbison
err. I tried, but.. what?
Also:
Even if by chance you gained the actual arms you wouldn't gain any extra attacks with them- since you only gain added abilities based on either the spell or polymorph school and neither give you extra attacks for having extra arms.
I would say- yes you get them but they aren't usable for combat purposes.
-S

Dave Justus |

Interestingly, the Polymorph subschool does give you extra natural attacks (if the form has them.) So if the kasatha natural claw attacks, you would have four claw attacks and, if I'm reading it correctly, a person polymorphed into the hypothetical clawed kasatha could substitute at least two (maybe more) of these natural attacks for weapon attacks, retaining any left over as secondary natural attacks.
I don't think allowing multi-armed to be something that is part of the polymorph effect would be game breaking, but strictly RAW it doesn't come across.

Selgard |

Alter Self:
When you cast this spell, you can assume the form of any Small or Medium creature of the humanoid type. If the form you assume has any of the following abilities, you gain the listed ability: darkvision 60 feet, low-light vision, scent, and swim 30 feet.
Small creature: If the form you take is that of a Small humanoid, you gain a +2 size bonus to your Dexterity.
Medium creature: If the form you take is that of a Medium humanoid, you gain a +2 size bonus to your Strength.
Extra attacks aren't listed therefore you do not get them.
-S

Mojorat |

No because historicly there were not a lot of multi lumber creatures that you could turn into. I don't this k extra limbs needs to be called out. Multiweapon fighting is the only thing I'm aware of that references them.
Turning into a kassath doesn't make you elligablw for mwf and without the feat wielding 4 swords is a waste of time.

blahpers |

Why is this even being considered different, than say, using Beast Shape to take the form of a Girralon, or Giant Octopus?
That is what confuses some readers. Changing into a giant octopus grants you all of the natural attacks a giant octopus has to offer (per the rules for the polymorph subschool). So it's only natural that a reader might think the same for offhand attacks (unarmed or manufactured) when changing into a multi-armed creature. However, as you stated, the rules for polymorph spells only grant natural attacks, not other types of attack.
So them's the breaks. If you want to have multiple arms, play the reincarnate lotto until you land on kasatha.

Cheapy |

Contextually, something to keep in mind is that the polymorph type spells were changed specifically to reduce power growth as more and more books were released. Instead of giving every ability, they have a set-in-stone set of abilities they can grant. This for the most part future-proofs the spells from being more powerful than intended.