Merfolk Magic

You learn the magic of the waters in which your people dwell, allowing you to control them to some extent. You learn the Shape Water cantrip. You also learn the Create or Destroy Water and the Tidal Wave spells, each of which you can cast once without expending a spell slot. You regain the ability to cast these two spells in this way when you finish a long rest. Charisma is your spellcasting ability for all three spells.