The Locus.

[Almosteric]

The Locus. 100 cards, 0 sideboard 1 {Omnath, Locus of Mana} 1 {Treetop Village} 35 {Forest} 1 {Khalni Garden} 37 lands 1 {Seedborn Muse} 1 {Sylvan Primordial} 1 {Dungrove Elder} 1 {Blightsteel Colossus} 1 {Predator Ooze} 1 {Brutalizer Exarch} 1 {Craterhoof Behemoth} 1 {Pathbreaker Wurm} 1 {Primordial Hydra} 1 {Acidic Slime} 1 {Mwonvuli Beast Tracker} 1 {Molimo, Maro-Sorcerer} 1 {Scion of the Wild} 1 {Yeva, Nature's Herald} 1 {Thragtusk} 1 {Elderscale Wurm} 1 {Llanowar Elves} 1 {Wolfir Silverheart} 1 {Sylvan Basilisk} 1 {Vorinclex, Voice of Hunger} 1 {Viridian Emissary} 1 {Vorapede} 1 {Bellowing Tanglewurm} 1 {Somberwald Sage} 1 {Engulfing Slagwurm} 1 {Obstinate Baloth} 1 {Chancellor of the Tangle} 1 {Strangleroot Geist} 28 creatures 1 {Primal Rage} 1 {Green Sun's Zenith} 1 {Whispersilk Cloak} 1 {Howling Mine} 1 {Sword of War and Peace} 1 {Expedition Map} 1 {Rancor} 1 {Evolution Charm} 1 {Caged Sun} 1 {Rampant Growth} 1 {Akroma's Memorial} 1 {Bear Umbra} 1 {Ranger's Path} 1 {Boundless Realms} 1 {Beast Within} 1 {Lure} 1 {Blessings of Nature} 1 {Doubling Cube} 1 {Sword of Feast and Famine} 1 {Swiftfoot Boots} 1 {Infiltration Lens} 1 {Garruk, Primal Hunter} 1 {Overrun} 1 {Darksteel Plate} 1 {Karn Liberated} 1 {Regeneration} 1 {Revenge of the Hunted} 1 {Explore} 1 {Overgrowth} 1 {Blanchwood Armor} 1 {Might of Oaks} 1 {Tooth and Nail} 1 {Triumph of the Hordes} 1 {Rites of Flourishing} 34 other spells Sideboard Notes: My mono colored EDH. Very fast!

[Gorzo]

Unless my math is off, you're short a card
37 lands, +
28 creatures, +
33 spells, +
1 {Om-Nom-Nom, Locus of Mana} =
99.  You get to add an extra thing! Or the numbers got fudged, also a possibility if you are short a card, {Upwelling} might be useful. Saves all that mana even if Onmath dies to a {wrath of god}.

Either way, looks like a nasty deck! Onmath scares me. Any commander than can be cast on turn 1 scares me.

[Almosteric]

Haha. Thanks!  I left out  {Akroma's Memorial} although upwelling is something I'll see if I can get my paws on!

[Bman0121]

 {Asceticism} is amazing gives all your dudes hexproof and you can regenerate

[izik99]

 {Giant Adephage} because its awesome if you get it out quickly. Makes your opponents want their Wrath of God more and more each turn.

[FlickerYourOwnIdentity]

Unless my math is off, you're short a card
37 lands, +
28 creatures, +
33 spells, +
1 {Om-Nom-Nom, Locus of Mana} =
99.  You get to add an extra thing! Or the numbers got fudged, also a possibility if you are short a card, {Upwelling} might be useful. Saves all that mana even if Onmath dies to a {wrath of god}.

Either way, looks like a nasty deck! Onmath scares me. Any commander than can be cast on turn 1 scares me.

Yup we all know {Om-Nom-Nom, Locus of Mana} is very vulnerable, so I was looking for bounce cards, and {Darksteel Plate}.  I found one of the two.

Then i realized green doesn't have flicker-y cards so I'm ok with this.  Cool deck, I'm looking forward to seeing how this plays out against my friends...

[Juggalonoke]

 {Rofellos, Llanowar Emissary} with an  {Umbral Mantle} makes infinite mana.... I run this combo in my nommers
Edit: I'd also suggest  {Garruk Wildspeaker}

[Almosteric]

{Rofellos, Llanowar Emissary} with an  {Umbral Mantle} makes infinite mana.... I run this combo in my nommers
Edit: I'd also suggest  {Garruk Wildspeaker}

Those are both great suggestions!  Thank you!  Infinite Feed the locus!!!!

[Xaol]

This deck could use some tutors as well. {Chor of Calling} {Worldy Tutor} {Summoning Pact} are all good. Mono-Green commander decks are fun! I'd try and pack some fun cards as well. {Squirrel Nest} is always fun. So it {Isochron Scepter} with a ramp card imprinted. As always, feel free to ask me, if you're looking for any cards. My list isn't up to date, but I'm always happy to help a fellow EDH player. All the best with this deck, looks like fun!