Xixchil Body Manipulation (New Feat)

I worked up a little something tonight, and I wanted to get some critique.

Static, if this meets your approval, I'd like to post it on Beyond the
Moons.

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Body Manipulation

You are able to enhance the physical properties of others.

Prerequisite:  Xixchil, Dexterity 15+

Benefit:  You are able to enhance a physical quality of a patient.  Choose
one enhancement amongst the following:
· Body Armor:  The patient gains a tough outer shell, giving a +3
enhancement bonus to his Armor Class.
· Darkvision:  The patient can see in the dark up to 60 feet.
Darkvision is black and white only, but it is otherwise like normal sight,
and the patient can function just fine with no light at all.
· Embedded Weapons:  The patient gains an extra limb, which is shaped
like a weapon (patient’s choice).  This limb has all of the combat features
of that non-magical weapon.
· Enhanced Dexterity:  The patient gains a +4 enhancement bonus to
his Dexterity Score.
· Enhanced Constitution:  The patient gains a +4 enhancement bonus to
his Constitution Score.
· Enhanced Speed:  The patient adds 10 to his base speed.
· Enhanced Strength:  The patient gains a +4 enhancement bonus to his
Strength Score.
· Flight:  The patient gains large wings (12 foot span) which gives
him a flying speed of 50 feet with average maneuverability, as long as they
do not carry more than a Medium load, are not wearing Heavy armor, and are
not fatigued or exhausted.  The patient cannot fly in an area where they
cannot fully extend their wings.
· Low-light Vision:  The patient is now able to see twice as far as a
human in starlight, moonlight, torchlight, and similar conditions of poor
illumination.  He retains the ability to distinguish color and detail under
these conditions.

Special:  A patient may only benefit from this feat once, and may never
gain more than one body enhancement.  Each body manipulation reduces the
patient’s Charisma by 4.

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Trampas
Wanderer of Celestian