Parecelbeast, Scampering Scorcher, Domri, Anarch of Bolas, and Chandra, Novice Pyromancer came out and Brushfire Elemental, Tangled Florahedron, Realmwalker, and Undergrowth Champion are in. The deck needed to be a little faster, currently considering taking out Thunderkin Awakener as well. It might be nice to bring back a Risen Reef or a Brushfire Elemental, but those are the only main targets for it. Tangled Florahedron most of the time will come in as a land, so I don't think I'll find too often that I'm bringing it back from the graveyard.
Speaking of Tangled Florahedron, this is an incredible addition to the deck. it allows me to go down to 19 lands due to the fact that it's a flip card into Tangled Vale. One of the best things about it in this deck is that it can come into play as a land off of Risen Reef, but it can also come in as a creature off of Collected Company if I don't have any other great targets, or if I just want a dork.
I also added a 2nd Omnath, Locus of Rage. It is just a huge finisher to the deck and since the deck is planning to bring in a ton of lands and ramp, it's not out of the ordinary to cast it well before turn 7. Once it's out though, the game can go extremely well for you. Not only because of the landfall triggers and Risen Reef combo, but just the fact that your other elementals dying is just a bolt to the face or a creature is huge.
Another reason I am liking this deck is the cost of it. I'm not spending a ton on the mana base or the creatures. Most expensive card in the deck right now is Collected Company, but even with 4 copies, this deck is under $300. Also, as soon as the triomes rotate out of standard, the price will drop a little bit and it should be even more affordable.
LGSs in my area currently aren't holding many Pioneer events, so I haven't really been able to play test this as much, but I'm looking forward to playing it when the events ramp up. Local places have mostly been doing drafts and Modern, so I've just been playing that. Would love to hear suggestions from anyone about what cards should come into the deck and what I should take out!