Do you keep natural abilities when Shape Changed?

[Stephen Ede]

For example if a Nightmare puts on a Greater Hat of Disguise to change into a Elf can it still use it's ability to Fly.
Note that it doesn't use wings to fly but rather Flight is an untyped natural ability.

I think the answer is yes but not sure.

Thanks

[blahpers]

Transmutation (polymorph) wrote:

While under the effects of a polymorph spell, you lose all extraordinary and supernatural abilities that depend on your original form (such as keen senses, scent, and darkvision), as well as any natural attacks and movement types possessed by your original form. You also lose any class features that depend upon form, but those that allow you to add features (such as sorcerers that can grow claws) still function. While most of these should be obvious, the GM is the final arbiter of what abilities depend on form and are lost when a new form is assumed. Your new form might restore a number of these abilities if they are possessed by the new form.

Edit:

Movement type = it's gone.

[Stephen Ede]

So would that mean if an Undead creature Cast a Polymorph spell on itself, such as Monstrous Physique, it would lose all the extraordinary and supernatural abilities, such as Energy drain, Dark Vision, Ressurection vunerability.

How would it affect unspecified traits from creature type, such as immunity from ability damage?

[blahpers]

Movement types, special attacks, and form-dependent ex and su abilities, yes. What constitutes "form-dependent" is at GM discretion. As a GM I would rules resurrection vulnerability and immunity to ability damage to be inherent to the creature by virtue of its type and nature, so those would stay. Darkvision would go, and Energy drain goes as it is a special attack.