Natural Attacks

When you design a polymorph form, you can give it a natural attack. A creature in this form has an attack bonus for the natural attack equal to 1-1/2 times its character level or Challenge Rating (CR), to a maximum of three times the level of spell that grants the form. No ability modifiers, class features, feats, items, racial abilities, or spells modify this attack bonus (though it is affected normally by penalties). The natural attack deals damage equal to the standard melee damage for an expert NPC of a CR equal to the creature’s level or CR, to a maximum character level or CR equal to three times the level of spell that grants the form. No equipment modifies this damage except for Strength bonuses from personal upgrades (though it is affected normally by penalties).