Shield Bash

Flexible melee attack

You must be using a shield.

Any natural even roll

The target pops free from you after the attack (does not allow opportunity attacks).

Adventurer Feat: 

If the target is also engaged with any of your allies, you can have it pop free from them as well.

Champion Feat: 

Once per battle, you can also daze the target (save ends) of your shield bash attack, if that enemy is staggered.