The first point of confusion with the spell. Polymorphic organism is clarifying how exactly your text interacts with that of Alter Self. To that end, the combination of the two spells is shown below as if Polymorphic organism It was written as an independent spell instead of a derivative one. This was accomplished by breaking both spells line by line, and then replacing lines of Alter Self with the respective lines of Polymorphic organism, in addition to changing lines of Alter Self to refer to "subject / it" instead of "you / his" as appropriate.
Level: Sor / Wiz 4
Components: V, S, M
Audition time: 1 standard action
Distance: I touched
Objective: Willing living creature touched
Duration: 1 min / Level (D)
Saving Throw: Any
Spell Resistance: Do not
You change the willing subject to another form of living creature. It cannot cause a subject to assume a smaller form than Fina, nor can it cause a subject to assume a disembodied or gaseous form. The assumed form cannot have more hit dice than your thrower level (or the subject's HD, whichever is lower), up to a maximum of 15 HD at level 15. The new form may be of the same type as the subject or any of the following types: aberration, animal, dragon, fairy, giant, humanoid, magical beast, monstrous humanoid, exudate, plant or vermin.
When changing, the subject recovers the lost hit points as if he had rested overnight (although this healing does not restore the damage of temporary ability and provides other benefits of resting; and the change of back does not heal the subject anymore). The subject obtains the Force, Dexterity and Constitution scores in the new form, but retains his own Intelligence, Wisdom and Charisma scores. The class and level of the subject, hit points, alignment, base attack bonus and base rescue bonuses remain the same.
The subject retains all special attacks and supernatural qualities and spells in its normal form, except those that require a part of the body that the new form does not have (such as a mouth for a breath weapon or eyes for a look attack). The subject maintains all extraordinary special attacks and qualities derived from class levels, but loses any of its normal form that does not derive from class levels. He also wins all the extraordinary special attacks that the form possesses, but does not obtain the extraordinary special qualities that the new form possesses or any supernatural or spell-like abilities.
If the new form is able to speak, it can communicate normally. The subject retains any spell casting abilities he had in his original form, but the new form must be able to speak intelligibly (i.e. speak a language) to use verbal components and must have limbs capable of fine manipulation to use somatic components or materials
The subject acquires the physical qualities of the new form while retaining his own mind. Physical qualities include life size, worldly movement capabilities (such as burrows, climbing, walking, swimming and flying with wings, at a maximum speed of 120 feet to fly or 60 feet for movement without flight), natural armor bonus, natural weapons (such as claws, bites, etc.), racial skills bonuses, feats of racial bonus and any serious physical quality (presence or absence of wings, number of limbs, etc.). A body with additional limbs does not allow the subject to make more attacks (or attacks with two more advantageous weapons) than normal.
The subject does not obtain special qualities not mentioned above under physical qualities, such as dark vision, low light vision, blind sense, blind vision, rapid healing, regeneration, aroma, etc. The subject does not get any special supernatural attack, special qualities or spell abilities in the new way.
The type and subtype of the subject's creature (if applicable) change to match the new shape. The subject cannot take the form of a creature with a template, even if that template does not change the type or subtype of creature. The disembodied or gaseous creatures are immune to being polymorphs, and a creature with the form-changing subtype can return to its natural form as a standard action.
You can freely designate the minor physical qualities of the new form (such as hair color, hair texture and skin color) within normal ranges for such a creature. The significant physical qualities of the new form (such as height, weight and gender) are also under your control, but must be within the standards for the class of the new form. The subject effectively disguises himself as an average member of the race in the new way. If you use this spell to create a costume, you get a +10 bonus on your costume check.
When the change occurs, the subject's equipment, if any, remains worn or retained by the new form (if it is able to use or hold the item), or merges with the new form and stops working. When the subject returns to its true form, any object previously mixed in the new form reappears in the same location on its body that it previously occupied and becomes functional again. Any new item that the subject used in the assumed manner and that he cannot use in his normal form falls and falls at his feet; Everything that you can use in any form or carry in a part of the body common to both forms at the time of reversal is still maintained in the same way.
Any part of the body or piece of equipment that separates completely returns to its true form. If killed, the subject returns to its original form, although it remains dead.
With the spell more clearly defined, we can now go section by section to determine exactly what Polymorphic organism It really does, organized by paragraph: