You can try to trip an opponent as an unarmed melee attack. You can only trip an opponent who is one size category larger than you, the same size, or smaller.
Making a Trip Attack
Make an unarmed melee touch attack against your target. This attack provokes an attack of opportunity from your target as normal for unarmed attacks.
If your attack succeeds, make a Strength check opposed by the defender’s Dexterity or Strength check (whichever ability score has the higher modifier). You both get a +4 bonus for every size category you are larger than Medium or a -4 penalty for every size category you are smaller than Medium.
The defender gets a +4 bonus on their check if they have more than two legs or are otherwise more stable than a normal humanoid. If you win, you trip the defender. If you lose, the defender may immediately react and make a Strength check opposed by your Dexterity or Strength check to try to trip you..
Avoiding Attacks of Opportunity
If you have the Improved Trip feat, or if you are tripping with a weapon (see below), you don’t provoke an attack of opportunity for making a trip attack.
Being Tripped (Prone)
A tripped character is prone. Standing up is a move action.
Tripping a Mounted Opponent
You may make a trip attack against a mounted opponent. The defender may make a Ride check in place of their Dexterity or Strength check. If you succeed, you pull the rider from their mount.
Tripping with a Weapon
You can use a few particular weapons to make trip attacks. In this case, you make a melee touch attack with the weapon instead of an unarmed melee touch attack, and you don’t provoke an attack of opportunity.
If you are tripped during your own trip attempt, you can drop the weapon to avoid being tripped.
- Spiked Chain
- Flail/Heavy Flail