You improve on your defensive capabilities.
Prerequisites: Con 15, Adamantoise Style, Combat Reflexes, BAB +5.
BENEFIT
While in the Adamantoise Style, the bonus to your Shield AC from the style is also applied to Touch AC, CMD, and saving throws against spells and spell-like abilities. In addition, you may use Constitution in place of Dexterity for determining the number of additional attacks of opportunity you may make each turn from Combat Reflexes.