Greater Call to the Wave

You have learned how to harness greater power through your elemental herritage

Increase your constitution or wisdom score by 1 (your choice)

You may cast the Wall of Water  or Control Water spell without expending a spell slot or material components as a 4th-level spell. Constitution is your spellcasting ability for these spells. Once you cast one of these spells, you can't do so again until you complete a long rest.