Terrasoul (Intelligence)

You've developed a deeper connection to the Elemental Plane of Earth, known to its inhabitants as the Infinite Delve. You gain the following benefits:

• Increase your Charisma, Intelligence or Wisdom score by 1, to a maximum of 20.
• You gain 30 feet of tremorsense, which allows you to detect and pinpoint the origin of vibrations within a specific radius, provided that both you and the source of the vibrations are in contact with the same ground or substance.  Tremorsense can't be used to detect flying or incorporeal creatures.
• You can cast erupting earth 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).