Champion of Nature

Epic Tier
Prerequisite: 21st level, wilden, Nature’s Aspect racial trait
Benefit: Whenever you reach a milestone, choose an aspect of nature available to you but that you aren’t manifesting. You can use that aspect’s racial power as well as the power of your current aspect. You can’t use this feat to choose the same aspect more than once before your next extended rest.

Published in Player's Handbook 3, page(s) 190.