Song of the Night Sea

Of course, Pindao is just passing by. How the author writes is still your own business.

There is a spell called Weak Energy, which can weaken the opponent's attack. There is also Black Tentacle, which is also one of the mage's standing spells. The evocation system of the Eight Schools has always been effective against water-based creatures. The conjuration system can summon creatures from outside the plane. If the mages are blessed with the Hero's Feast, they can move freely and endure the environment. Banshee's Wail and Sunfire Explosion are probably also useful in combat situations on the water.

It seems that the life of a mermaid is full of supernatural abilities and spell-like abilities, but these are the only things that can't stop human mages. If there is confinement, curse, exhaustion wave, dispel evil, anti-magic field, dispel magic, force blade, or Bigby series of spells, the mermaid will probably die soon. Moreover, many mages have their own teleportation spells that trigger protective spells. The mermaid's charm spell is useless, and just blocking the spiritual link will not work. There are also many spells that I can't remember at once. ,