Earthsense (Oread)

You were inexplicably transformed in the womb by elemental forces, making your connection to the earth exceptionally strong.

Benefit(s) As a swift action, you can gain tremorsense to a range of 60 feet until the beginning of your next turn. You can use this ability once per day at 1st level, plus one additional time per day at 5th level and every 5 levels thereafter, to a maximum of five times per day at 20th level.