Created at the Underforge of Mirrah, made from Mature Blue Sea Serpent scales from Brudersa, this deployable cover shines iridescently, and shimmers as if containing the open seas themselves. 

Bunker Down: You may take an action to deploy this cover, were it magically extends 4 feet tall and 10 feet wide centered on where you placed it. While behind this cover, you gain half cover. While deployed, Tide Breaker Bastion cannot be moved, and has 60 Hit Points. If reverted to 0 Hit Points, it will retract to its original size and be unusable for 1d4 days or until repaired by a capable smith. Tide Breaker Bastion may be retracted uses a bonus action and redeployed once, and cannot be deployed again after until a long rest.

Liquid Defense: While the Tide Breaker Bastion is deployed, you may use a bonus action to speak the activation word and activate Liquid Defense. Deep blue seawater rushes out from between the scales of the bastion and casts the Wall of Water spell at 3rd level. While Wall of Water is cast in this way, you can only create a flat wall, and it is only 20ft wide instead of 30ft. Once Liquid Defense is used, it cannot be activated again until the next dawn. While Liquid Defense is active, you may use an action to activate Tidebreaker.

Tidebreaker: Consumes Liquid Defense upon use. Gathering seawater, you send a tidal wave forward in a 10 foot wide area, 50 feet forward. anyone caught in the waves makes a 13 DEX saving throw, being knocked prone on a fail, and take 3d6 bludgeoning damage on a fail, half as much on a success.