# Sentinel > [!info] Feat Details > | | | > |---|---| > | **Source** | Player's Handbook (2014) | > | **Categories** | Control, Warding | --- ## Description You have mastered techniques to take advantage of every drop in any enemy's guard, gaining the following benefits: - When you hit a creature with an opportunity attack, the creature's speed becomes 0 for the rest of the turn. - Creatures provoke opportunity attacks from you even if they take the Disengage action before leaving your reach. - When a creature within 5 feet of you makes an attack against a target other than you (and that target doesn't have this feat), you can use your reaction to make a melee weapon attack against the attacking creature.