Sentinel

You have mastered techniques to take advantage of every drop in any enemy’s guard, gaining the following benefits:

Ability Score Increase. Increase your Strength or Dexterity score by 1, to a maximum of 20.

Guardian. Immediately after a creature within 5 feet of you takes the Disengage Action or makes an Attack Roll against a target other than you, you can make an Opportunity Attack against that creature.

Halt. When you hit a creature with an Opportunity Attack, the creature’s Speed becomes 0 for the rest of the turn.