(Like, heres an ex of their [Abyss'] powers maximum- I want to make sure this is fine and not overpowered for a 3-way hybrid.
They were sitting on a boulder. They felt a swift wind change and closed their eyes. They thought they had seen a crater the size of a small, curled up dragonet as the image was fading away. Well, i suppose its to rain really bad, then [they have an accent closer to that of a brit's] they thought. After that thought passed, they leaped into the water, turning on the glow-part of their antennae)