The drake forcibly vomits a long line of bile-coated kelp that unravels in a 30-foot-long, 5-foot-wide line. Each target in the area must make a DC 13 Dexterity saving throw. On a failure, a creature takes 14 (4d6) acid damage and is restrained by kelp for 1 minute. On a success, a creature takes half the damage and isn't restrained. A creature, including the target, can take its action to remove the kept by succeeding on a DC 13 Strength check. Alternatively, the kelp can be attacked and destroyed (AC 10; hp 3; immunity to bludgeoning, poison, and psychic damage).