替换能力是这一个啦
Underfoot: Halflings must train hard to effectively fight bigger opponents. Halflings with this racial trait gain a +1 dodge bonus to AC against foes larger than themselves and a +1 bonus on Reflex saving throws to avoid trample attacks. This racial trait replaces the halfling luck racial trait.
而闪避上CMD是这里
A creature can also add any circumstance, deflection, dodge, insight, luck, morale, profane, and sacred bonuses to AC to its CMD. Any penalties to a creature's AC also apply to its CMD.