Lockdown

You have mastered techniques to pin down encroaching threats to you and your allies in battle and gain the following benefits:

• When you hit a creature with an opportunity attack, the creature's speed becomes 0 for the rest of the turn.
• Allies do not provoke opportunity attacks from creatures you have hit with a ranged attack within the last turn.
• Once per turn when a creature within your attack range moves within 10 feet of an ally you can use your reaction to make a ranged weapon attack, or cast a ranged cantrip, against the attacking creature. This unique ranged cantrip attack cannot be twinned or have more than one attack roll or saving throw.