Merfolk Stormcaller

Touched by Lamannia, the merfolk of the Thunder Sea have a deep connection to primal forces and planar power. The merfolk shepherd underwater manifest zones, and many can channel druidic magic. At the DM's discretion, merfolk encountered in the Thunder Sea could know a cantrip from the Druid spell list.

A stormcaller feels the flow of the tides around, currents below, and shifting storms above the water, and can direct this power against those who threaten their people. Working together, a circle of stormcallers can bring down an entire fleet of ships. The greatest stormcallers have powers beyond what's shown here; the merfolk tell stories of stormcallers who can command the beasts of the sea and transform into mighty squids or whales.
Wardens of the Water. Most stormcallers seek to maintain balance within their realm. Like the Wardens of the Wood, they strive to protect their region from outside threats, but also to protect foolish outsiders from the dangers of the deeps and the manifest zones the stormcallers guard. However, there are stormcallers who view any intrusion into their waters as an affront that must be punished.
Druidic Speech. Stormcallers know the Druidic language, which they believe to be the language of the world itself. Most stormcallers will parley with any creature who speaks Druidic, but they have high expectations of such beings. A stormcaller may ask a foreign druid to help with an unnatural threat or to serve as a mediator in a local dispute.