I have a few new cards on the way and do not know what to take out. I have Oracle of Mul Daya, Protean Hulk, and Defense of the Heart. Anyone have recommendations on what to take out for these?

The only cards that I thought looked a little under-powered were Decimator of the Provinces, Mossbridge Troll, and Seed Guardian.

If you are interested Aspect of Mongoose, and Mask of Avacyn are some low mana cost cards if you need extra protection. The best part about those cards is that they can be reused.

The only reason I have Seed Guardian in the deck is to be a place holder for Sylvan Primordial which my play group has allowed me to put in since we play mostly casual stuff. I personally like Decimator simply because of being able to give my creatures trample for a turn along with a little boost. The troll is there just as a fun card. Plus people seem to think its awesome so they waste a burn spell on it.

I used to have both in this deck, but looking at the aspect again, I am thinking that might need to go back in here!

I had never thought about those hydras going into this deck! I will look into getting them. As for Primalcrux and Vigor, I used to have them in the deck, but I have another deck that they fit better in. And of course I only have 1 of each...but I might at least look into putting them back in.

Any suggestions on what I should take out in their place?

Why is seed Guardian in the deck. I understand the need for some lower costed creatures in order to keep the curve balanced, but wouldn't somthing like Lotus Cobra be a better fit. It is coming out in Iconic masters as a rare, so the price should go down! Love the deck!

As I mentioned before, Seed Guardian is just my place holder for Sylvan Primordial which my play group allows me to have in this deck. But I wanted to keep the deck legal on tapped out.

I would like to put the Cobra in this deck! Just need to obtain him when he comes out next.

I see. Another card that might fit well, although i don't know what you could take out for it, is Garruk's Horde it is kind of slow, but it gives you indirect card advantage and is a big body with trample.

i also had omnath as my first EDH deck and there are a few cards i would recomend Rishkar's Expertise, Bane of Progress, Hydra Broodmaster, Seedborn Muse, Tooth and Nail, Gelatinous Genesis, Genesis Wave, Boundless Realms, Caged Sun, Gauntlet of Power and Doubling Cube also my deck has all the eldarzi titans as well as some of the other ones i see for this deck you wanted more trampling big green creatures and eldrazi conscription does give +10/+10 and trample

I actually do have Rishkar's Expertise in this deck now, and I used to have Bane of Progress but never found as much use out of it. But as for the others, while they are great for Omnath and just having mana and mana sinks are always nice, my play group does not react well to overwhelming decks. We play for fun not winning per se. The Titans would be great in this deck, but we basically banned them from our play group.