Conjure Bolas

You can harness your natural abilities to prevent the escape of an attacker. You can use your reaction to conjure a bola in your hand and make a spell attack roll against a large or smaller creature within range. On a hit, that creature falls prone and is grappledfor the duration. As an action, the target can attempt to break free by making a Dexterity saving throw. On a success, the spell ends on the target. You can only have one Conjure Bolas spell active at a time.