Walkers of the Depths

Walkers of the Depths are never seen before they are heard. Rather than the depths of an ocean, they walk the depths of the heart.
Although they are powerful, they are always helpless to the physical world when they go depth-walking. That is why they conspire with dark elves, who worship them.
Walkers of the Depths have powers never understood. It is said one stopped the hearts of an army dead with shock, while another brought back a fallen ally from the dead.
Beyond physical feats, Walkers of the Depths have done many mental miracles. When an earthquake shattered the Depths Temples, the Walkers of the Depths convinced a backstabbing nation to rebuild it from scrath with no pay nor reward. The Walkers of the Depths have overturned kings, kingdoms, and wars with their powers.