The Merman race had two Main professions of Bard and Polymorphs. Bards relied upon sound to give status effects to those listening to their songs.
This included amplifying their powers, nerfing the same, spiking their body's natural healing power, causing them to be swallowed by their insecurities, putting them under a hallucination, etc.
The effects varied, but the cause was the beautiful songs that the Mermen sang. Those at the Pseudo-Saint Stage were even capable of transmitting the effects of the sound through mana alone, causing them to be even more difficult to guard against.
The second profession of Polymorphs allowed them to change their physique. It was a disguise technique in that only the target's appearance was altered. Their powers, aura, strength, and even mana signature remained the same.
This was different from the Transformation Specialists of the Lizardmen race.
