Tidesoul (Charisma)

You've developed a deeper connection to the Elemental Plane of Water, known to its inhabitants as the Boundless Sea. You gain the following benefits:

• Increase your Charisma, Intelligence or Wisdom score by 1, to a maximum of 20.
• You can occupy another creature's space and vice versa, and can pass through an enemy's space as if it was difficult terrain. Passing through a friendly creature's space no longer counts as difficult terrain for you. Moreover, you can squeeze through a space as narrow as 1 inch wide, provided you are wearing and carrying nothing.
• You can cast tidal wave once as a 3rd-level spell without requiring a spell slot, and you must finish a long rest before you can cast this spell in this way again. You can also cast it using spell slots you have of the appropriate level. Your spellcasting ability for this spell is Charisma, Intelligence, or Wisdom (chosen when you select this feat).