Threatening
Effect:
Whenever an enemy attempts to disengage from you, it takes a penalty to its check equal to your Dexterity or Constitution modifier, whichever is higher.
The penalty doesn't apply if you are stunned, grabbed, or otherwise incapable of making an opportunity attack.
Adventurer Feat:
Whenever an enemy fails to disengage from you, you also deal damage to that enemy equal to your Dexterity or Constitution modifier. At 5th level, damage is double the modifier. At 8th level, it's triple.
Champion Feat:
Whenever a non-mook enemy fails to disengage from you, it's vulnerable to your attacks for the rest of the battle.