Wow they are NOT playing around with these uncommon lands. Removal and two tokens, seems good. Of course by the time you can activate it and are willing to give up the mana source, the effect is less impressive. But still - there's extremely low downside to running this if your deck is in color so these should be strong in limited, and you may be able to pick them up late since they require devotion to a certain color combo.
Even more lands, even more removal, and even more Elf tribal. These lands are doing a lot fo heavy lifting here.
Source: Tim Willoughby