Tidereach

Action · Self · V, S, M (a shell that has held seawater) · Concentration, up to 1 minute

Action, self, concentration up to 1 minute. Ropes of cold sea water coil around your arms. Your melee attacks — unarmed strikes and a wild shape's natural weapons included, opportunity attacks too — reach 10 ft farther, and your melee hits deal an extra 1d6 cold. Once on each of your turns, when you hit a Large or smaller creature in melee, you drag it up to 10 ft straight toward you or shove it up to 10 ft straight away.