Needs review
Source: Stormwrack

Description: Mimicking the forceful power of the wave, you can trip multiple foes as part of the same strike.

Prerequisites: DEX 13, Improved Trip

If you trip an opponent in melee combat, you can immediately make another trip attempt against another foe within reach at the same total attack bonus as the first trip attack. This replaces the free attack you would normally get against the tripped opponent (from the Improved Trip feat). If you successfully trip a second opponent, you do not get a free attack against that opponent. You can use this feat only once per round.

Normal

A character with Improved Trip who trips an opponent in melee gets a free attack against that opponent.