Earth Child Topple

(Combat) Your mastery of balance and momentum allows you to bring down giants with your bare hands.

Prerequisite: Wis 13, dwarf or gnome, defensive training racial trait, Earth Child Style, Improved Trip, Improved Unarmed Strike, Acrobatics 6 ranks.

Benefit: You can trip a creature of the giant subtype of up to Huge size. While using Earth Child Style, you add your Wisdom bonus on combat maneuver checks made to trip a creature of the giant subtype, as well as on attack rolls to confirm a critical hit against such a creature.

Normal: You can trip only those opponents that are one size category larger than you.

Source: Ultimate Combat