Bindings of Kharybdis

Once per turn, whenever you successfully hit a creature with your Fingers of Kharybdis cantrip you may have the target roll a strength saving throw or become restrained by the tendrils. A creature restrained by the tendrils can use its action to make a Strength check against your spell save DC. On a success, it frees itself. As an action on each of your turns you may attack with your tendrils against the restrained target. If you loose concentration on this spell the target is freed. This ability can only be activated once per short rest and you regain this ability once you finish a short or long rest.