Strength of the True Form

Strength and power flows through your limbs, and blows rebound off flesh that is suddenly as hard as steel.

This spell can be cast only by a creature that has been altered due to the use of polymorph, alternate form, or a similar effect. Compare the natural armor, damage reduction, and physical ability scores of the caster’s current and original forms; for the duration of the spell, the caster uses the highest value in each category. This spell has no visible effect.

If the caster has the Silent Spell feat, he can apply it to this spell without increasing the casting time.

Although this spell was first developed by dragons, sorcerers of any race can master it; in particular, the rakshasas of the Lords of Dust often make use of this spell.