Transmutation
Level: Drd 5, Sor/Wiz 5
Components: V, S
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature
Duration: Permanent
Saving Throw: Fortitude negates, Will partial; see text
Spell Resistance: Yes
You change the subject into a Small or smaller animal of no more than 1 HD (such as a dog, lizard, monkey, or toad). The subject takes on all the statistics and special abilities of an average member of the new form in place of its own except as follows:
• The target retains its own alignment (and personality, within the limits of the new form’s ability scores).
• If the target has the shapechanger subtype, it retains that subtype.
• The target retains its own hit points.
• The target is treated has having its normal Hit Dice for purpose of adjudicating effects based on HD, such as the sleep spell, though it uses the new form’s base attack bonus, base save bonuses, and all other statistics derived from Hit Dice.
• The target also retains the ability to understand (but not to speak) the languages it understood in its original form. It can write in the languages it understands, but only if the form is capable of writing in some manner (such as drawing in the dirt with a paw).
With those exceptions, the target’s normal game statistics are replaced by those of the new form. The target loses all the special abilities it has in its normal form, including its class features.
All items worn or carried by the subject fall to the ground at its feet, even if they could be worn or carried by the new form.
If the new form would prove fatal to the creature (for example, if you polymorphed a landbound target into a fish, or an airborne target into a toad), the subject gets a +4 bonus on the save.
If the subject remains in the new form for 24 consecutive hours, it must attempt a Will save. If this save fails, it loses its ability to understand language, as well as all other memories of its previous form, and its Hit Dice and hit points change to match an average creature of its new form. These abilities and statistics return to normal if the effect is later ended.
Incorporeal or gaseous creatures are immune to baleful polymorph, and a creature with the shapechanger subtype (such as a lycanthrope or a doppelganger) can revert to its natural form as a standard action (which ends the spell’s effect).
Source: Player's Handbook, PHB1 Errata
Polymorph
Transmutation
Level: Sor/Wiz 4
Components: V, S, M
Casting Time: 1 standard action
Range: Touch
Target: Willing living creature touched
Duration: 1 min./level (D)
Saving Throw: None
Spell Resistance: No
This spell functions like alter self, except that you change the willing subject into another form of living creature. The new form may be of the same type as the subject or any of the following types: aberration, animal, dragon, fey, giant, humanoid, magical beast, monstrous humanoid, ooze, plant, or vermin.
The assumed form can’t have more Hit Dice than your caster level (or the subject’s HD, whichever is lower), to a maximum of 15 HD at 15th level. You can’t cause a subject to assume a form smaller than Fine, nor can you cause a subject to assume an incorporeal or gaseous form. The subject’s creature type and subtype (if any) change to match the new form (see the Monster Manual for more information). Upon changing, the subject regains lost hit points as if it had rested for a night (though this healing does not restore temporary ability damage and provide other benefits of resting; and changing back does not heal the subject further). If slain, the subject reverts to its original form, though it remains dead.
The subject gains the Strength, Dexterity, and Constitution scores of the new form but retains its own Intelligence, Wisdom, and Charisma scores. It also gains all extraordinary special attacks possessed by the form (such as constrict, improved grab, and poison) but does not gain the extraordinary special qualities possessed by the new form (such as blindsense, fast healing, regeneration, and scent) or any supernatural or spell-like abilities.
Incorporeal or gaseous creatures are immune to being polymorphed, and a creature with the shapechanger subtype (such as a lycanthrope or a doppelganger) can revert to its natural form as a standard action.
Material Component: An empty cocoon.
Source: Player's Handbook
