WAR was one of the first sets in a while that came with more than a single card for this deck, so i just had to get me some toys. Return to Nature is a fantastic common and strictly better than the classic Naturalize, which already is a solid card itself.
Since i'm not too fond of too many unlimited tutors per deck, Vivien's Arkbow is the perfect fit of strength and randomness. Same goes for Vivien, Champion of the Wilds' - ability, while she doubles as a second Yeva, Nature's Herald.
ps. I'm looking to include Vivien's first iteration Vivien Reid as well, but her price is currently inflated due to her being standard legal.