Chandra, Flamecaller for those Omnath death triggers on her +1.

Also in that same vein, Skullclamp.

PauperPower, thanks for the upvote and suggestions! However, gonna pass on both because a) I ran Chandra, Flamecaller for a short period and didn't feel she was useful enough to warrant a spot and b) I like Skullclamp but I wouldn't want to cut a card for it since I already have a decent amount of better (and quicker) draw options.

Personally I feel that Myriad Landscape would benefit you more than Blighted Woodland or maybe run both. But that mana cost for Blighted Woodland just hurts.

How do you feel about throwing a Savage Ventmaw into the deck? Gives you a flyer and mana for attacking?

Metachemist, man, why you gotta make me second guess myself?! Ha. Yeah I think the driving force behind dropping Landscape over Woodland is that the former comes out tapped while the latter doesn't. Also, Landscape does have that "lands of the same type" restriction, although that isn't that crazy I suppose. I'm gonna have to rethink things, damn it, ha.

Ventmaw is a cool guy, but I don't know, he'd be kind of extra here when it generally isn't needed. Plus, I have no earthly idea what I'd want to cut for him. This deck is such a powerhouse that I don't want to mess with its good vibes if I can help it. Certainly not a bad suggestion, though!

Try this, cut one of those fancy fetch lands that don't allow you to get both of your colors, Bloodstained Mire I'm looking at you, and try running Myriad Landscape in it's place. You're not running Shocks or True Duals, so you don't need the ability to fetch non-basic mountains, and it allows you to get two for one card, giving two more land fall triggers and better card advantage.

And to make room for the Savage Ventmaw I'd cut Explosive Vegetation it's only 2 CMC higher, and you have tonnes of ways to give it haste which means he'd literally pay for himself on his first turn. Also he is a flying blocker which you need and yet another sac target if you need more cards from Greater Good

Okay edit to the above You are running two Mountain Forests hybrids but still I think my point stands over all

I appreciate the suggestions for cuts, Metachemist, but I'll probably keep things as is (except for maybe swapping Landscape and Woodland - still haven't decided!).

Bloodstained Mire can only grab 10 lands in the deck, yes, but it's a lot easier to abuse than Landscape. That becomes especially relevant with cards like Crucible of Worlds, Ramunap Excavator , and Titania, Protector of Argoth.

As for Savage Ventmaw, like I said, I like him but I don't see him as necessary. If he gets haste, he's obviously better, but regardless I'm so spoiled with land drops in this deck that I almost never have issue with running out of mana to do stuff I want. If Omnath had some sort of paid ability, then I'd be more inclined, but thankfully he doesn't. Yeah Ventmaw provides a flying body, but I honestly can't recall flyers giving me problems yet. In most cases I either run far ahead of those decks thanks to all the ramp, and/or I can throw damage at things so easily with this deck that I can stymie a big board for my opponents.

I found out that the fastest way to get Omnath out is to add cheap ramp creatures like Sakura-Tribe Elder. Also, then you have something to do in the first 5 turns (before I added them I was sitting there and waiting for Omnath to hit the field. Rather boring)

Yeah, I have plenty of ramp in here to get him out around turns 4 or 5 typically. However, just playing this deck puts a target on me any time I play it with my buddies because it has a tendency to overwhelm the board quickly. They do everything in their power to kill Omnath whenever he hits the board, because after a turn or two it's game over.

I know that. I prefer persistent effects (e. g. Parallel Lives) over overwhelming one-shots (e. g. Second Harvest), but then my opponents have a lot of time to respond. Omnath-Decks in general are always scary and mine in perticular screams "I AM DANGEROUS". Its Powerlevel is 7, but it feels like an 8.

I just added it. It is called "Omnath, Landdawn"