When you cast this spell, you can assume the form of any Diminutive, Tiny, Small, Medium, Large or Huge creature of the monstrous humanoid type.

If the form you assume has any of the following abilities, you gain the listed ability: burrow 60 feet, climb 90 feet, fly 120 feet (good maneuverability), swim 120 feet, blindsense 60 feet, darkvision 90 feet, low-light vision, scent, tremorsense 60 feet, blood frenzy, breath weapon, cold vigor, constrict, ferocity, freeze, grab, horrific appearance, jet, leap attack, mimicry, natural cunning, overwhelming, poison, pounce, rake, rend, roar, sound mimicry, speak with sharks, spikes, trample, trip, and web. If the creature has immunity or resistance to any energy types, you gain resistance 20 to those energy types. If the creature has vulnerability to an energy type, you gain that vulnerability. If the creature has immunity to poison, you gain a +8 bonus on saves against poison.

Diminutive monstrous humanoid: If the form you take is that of a Diminutive monstrous humanoid, you gain a +6 size bonus to your Dexterity, a –4 penalty to your Strength, and a +1 natural armor bonus.

Tiny monstrous humanoid: If the form you take is that of a Tiny monstrous humanoid, you gain a +4 size bonus to your Dexterity, a –2 penalty to your Strength, and a +1 natural armor bonus.

Small monstrous humanoid: If the form you take is that of a Small monstrous humanoid, you gain a +2 size bonus to your Dexterity and a +1 natural armor bonus.

Medium monstrous humanoid: If the form you take is that of a Medium monstrous humanoid, you gain a +2 size bonus to your Strength and a +2 natural armor bonus.

Large monstrous humanoid: If the form you take is that of a Large monstrous humanoid, you gain a +4 size bonus to your Strength, a –2 penalty to your Dexterity, and a +4 natural armor bonus.

Huge monstrous humanoid: If the form you take is that of a Huge monstrous humanoid, you gain a +6 size bonus to your Strength, a –4 penalty to your Dexterity, and a +6 natural armor bonus.