Path of the Tsunami

Barbarians who pursue the Path of the Tsunami channel their rage into the destruction that the ocean can wreak upon the land and it's inhabitants. They become the epicenter of their victims physical pain and suffering.

Storm Heralds are typically sea voyagers or island protectors. Some who follow this path will scare land lovers away, to defend their oceans. Others simply want to beat their enemies down until they're out of breathe and out of fight.

Strong Currents

Starting at 3rd level, a force flows from you pulling and pushing like the tide.

As a bonus action on each of your turns while you are raging, you can choose a target up to 15 feet away from you. The target must make a Strength Saving Throw, the DC of which equals 8 + your proficiency bonus + your Constitution modifier, or be pulled within 5 feet of you and the next time you hit that target with a melee attack until the start of your next turn add an extra 1d4 force damage as the target is pushed 10 feet away from you. On a success the target suffers no effects. This damage increases as your level rises, causing 1d6 at 6th Level, 1d8 at 10th Level, and 1d10 at 14th Level.

Destructive Resonance

Starting at 3rd Level, you also deal double damage to objects and structures.

Bore Down on Them

At 6th level, when you Rage you can choose to increase dramatically in size.

You become Large for the duration of your Rage. You cannot increase in size more than the space you are in allows. Your Reach increases by 5 feet and your Strong Currents ability can pull targets from up to 20 feet away from you. Your Rage Bonus is also doubled for the duration.

After you use this feature you can't until again until you finish a long rest.

Flood Waters

At 10th level, if you are standing in water you can use it to pull debris into your enemies as you attack them.

When you use your Strong Currents feature on a target, you can also pull any loose Medium or smaller objects within the same body of water from 30 feet away to within 5 feet of you. If there is a creature in the path of an object that is being pulled they must make a Dexterity Saving Throw, the DC is the same as presented in the Strong Currents feature, or take bludgeoning damage equal to the force damage bonus from Strong Currents.

Also, as an action, you can produce 30 gallons of water as rain in a 30 feet cube centered on yourself once per Rage.

Swept Away

At 14th level, a creature targeted by your Strong Currents feature that fails their Strength Saving Throw also becomes Stunned until the start of your next turn.