The general idea seems to be to vomit tons of cantripping critters onto the field and keep my hand full and then eventually beat with something big like Lorthos or Overbeing of Myth.
Biomantic Mastery is pretty nice if you need some more draw power. In Multiplayer, it can be game-changing.
If you're looking for something cheaper on the cmc, Recurring Insight is very good in EDH.
If you need more cantrippers, Dormant Sliver is alright if you find yourself paying against Sliver EDH decks. Though, it's sort of a double-edged sword. If you don't see a lot of sliver EDH decks, Jungle Barrier is a pretty good wall + cantrip.
Fable of Wolf and Owl is a good way to stall the game until you can get your big dudes out. With all the cantrippers, I'm sure you'll be casting a lot of spells.
However, with the amount of cantripping creatures I run, plus Momir's own ability, I don't think I have much reason to run 6 or 7 cmc draw spells. Also, Leafdrake Roost seems rather expensive and susceptible to LD/enchantment removal just to pump out Gaea's Skydrakes.
I'm actually a bit concerned with Blood Clock. It seems like I might actually help my opponents with it, since so many good EDH creatures have EtB abilities. I'm considering replacing it with Equilibrium or Erratic Portal.
I can see why. I'd go with Equilibrium over Erratic Portal, simply because you can reuse its ability in one turn, and it can be used to bounce opponents' creatures, too. However, they're both pretty good.
Avenger of Zendikar - This guy is already a solid finisher in every other EDH deck I have with green, it stands to reason he'd be solid here too. Added to the wishlist.
Caller of the Claw - I don't really feel like replacing my guys with a bunch of Grizzly Bears is worth the slot, since I should be able to recover from a Wrath easily enough as it is.
Cephalid Sage - I don't really foresee myself having threshold early enough for him to do much, and I'm not really keen on discarding in this deck since I have so little reanimation.
Draining Whelk - I'm just not sure how well he'll work, since my deck is designed to spit out a bunch of creatures, so leaving 4UU open with a full hand seems like an obvious trap. That's why I stuck with cheaper counters, so they're harder to see coming and play around.
Duplicant - Definitely worth running, it's just again a matter of all my copies already being in decks. Added to the wishlist, though.
Fierce Empath - Considering my general, I don't really see much need to run creature tutors.
Gilded Drake - Seems good, I'll add that one to the wishlist too.
Kavu Climber - 3GG for a 3/3 doesn't really cut it, even with the cantrip.
Pygmy Kavu - Seems rather situational, but I'll track the black critters I see in the next few games and decide then if he's worth it.
Regal Force - It looks good, but I don't know if I want to run a creature that expensive to draw cards when I have so many cheaper creatures already giving me plenty of CA. Similar to Biomantic Mastery.
Slithermuse - The problem is that I have a feeling I'll have an easier time keep my hand full than most other decks, so I don't know how many cards he'll really be able to net on average. Once again, I'll track this for a few games before I completely rule him out.
Pelekka Wurm - I don't really think it's an efficient way to gain life, and I'd rather not need my creatures to die to get cantrips. If I really need a way to gain a ton of life repeatedly, Jaddi Lifestrider might be worth testing. He does surprsingly well in my Kresh the Bloodbraided deck.
1 Momir Vig, Simic Visionary
Creatures (42)
1 Diligent Farmhand
1 Coiling Oracle
1 Sakura-Tribe Elder
1 Wall of Blossoms
1 Eternal Witness
1 Farhaven Elf
1 Gomazoa
1 Loaming Shaman
1 Lorescale Coatl
1 Sea Gate Oracle
1 Trinket Mage
1 Trygon Predator
1 Winged Coatl
1 Yavimaya Elder
1 Glen Elendra Archmage
1 Lu Xun, Scholar General
1 Mystic Snake
1 Nullmage Shepherd
1 Oracle of Mul Daya
1 Phyrexian Metamorph
1 Spike Weaver
1 Tradewind Rider
1 Acidic Slime
1 Body Double
1 Empress Galina
1 Mulldrifter
1 Ixidron
1 Riptide Shapeshifter
1 Seedborn Muse
1 Teferi, Mage of Zhalfir
1 Brutalizer Exarch
1 Consecrated Sphinx
1 Deadwood Treefolk
1 Duplicant
1 Sun Quan, Lord of Wu
1 Tomorrow, Azami's Familiar
1 Phyrexian Ingester
1 Sphinx Ambassador
1 Lorthos, the Tidemaker
1 Stormtide Leviathan
1 Terastodon
1 Tidespout Tyrant
1 Sylvan Library
1 Equilibrium
1 Leyline of Anticipation
1 Future Sight
1 Lurking Predators
1 Mana Reflection
1 Wild Pair
Artifacts (6)
1 Mana Crypt
1 Sol Ring
1 Lightning Greaves
1 Simic Signet
1 Cloudstone Curio
1 Crystal Shard
Instants (4)
1 Beast Within
1 Hinder
1 Voidslime
1 Force of Will
Sorceries (3)
1 Rite of Replication
1 Praetor's Counsel
1 Genesis Wave
Lands (37)
1 Bant Panorama
1 Breeding Pool
1 Evolving Wilds
1 Flooded Grove
9 Forest
1 Halimar Depths
9 Island
1 Minamo, School at Water's Edge
1 Misty Rainforest
1 Mosswort Bridge
1 Mystifying Maze
1 Okina, Temple to the Grandfathers
1 Oran-Rief, the Vastwood
1 Pendelhaven
1 Reliquary Tower
1 Riptide Laboratory
1 Terramorphic Expanse
1 Tolaria West
1 Tropical Island
1 Winding Canyons
1 Yavimaya Coast
I pretty much decided to the build the deck when I noticed I had a bunch of U/G cards and lands lying around not getting used.
Suggestions and constructive criticism are still very welcome.
If you're looking for something cheaper on the cmc, Recurring Insight is very good in EDH.
If you need more cantrippers, Dormant Sliver is alright if you find yourself paying against Sliver EDH decks. Though, it's sort of a double-edged sword. If you don't see a lot of sliver EDH decks, Jungle Barrier is a pretty good wall + cantrip.
Wall of Blossoms is an amazing cantripper.
Fable of Wolf and Owl is a good way to stall the game until you can get your big dudes out. With all the cantrippers, I'm sure you'll be casting a lot of spells.
Leafdrake Roost is tech if you face a lot of Teneb.
Murkfiend Liege. Liege + quazi-Seedborne Muse is very nice.
Finally, Wood Sage is a good card when used with your general.
However, with the amount of cantripping creatures I run, plus Momir's own ability, I don't think I have much reason to run 6 or 7 cmc draw spells. Also, Leafdrake Roost seems rather expensive and susceptible to LD/enchantment removal just to pump out Gaea's Skydrakes.
If you can find room, it's very nice with cantrippers.
I decided to go looking for other cards with decent EtB abilities, here's what I could find:
Avenger of Zendikar(Oh my god awesome with Equilibrium)
Caller of the Claw is nice against sweepers.
Cephalid Sage. Pseudo-cantrip.
Draining Whelp. Counterspells are good, especially recurrable ones.
Duplicant!!!!!! Removal!
Fierce Empath tutors your finishers.
Gilded Drake combos great with Equilibrium.
EDIT: Psychic Membrane is an old fave.
EDIT2: More cantrippers to help you pick the best of the bunch:
Kavu Climber
Pygmy Kavu rocks the socks off of black decks.
Regal Force, maybe?
Slithermuse
Sphinx of Lost Truths
Also, Pelakka Wurm is funny if you can repeatedly bounce it.
Caller of the Claw - I don't really feel like replacing my guys with a bunch of Grizzly Bears is worth the slot, since I should be able to recover from a Wrath easily enough as it is.
Cephalid Sage - I don't really foresee myself having threshold early enough for him to do much, and I'm not really keen on discarding in this deck since I have so little reanimation.
Draining Whelk - I'm just not sure how well he'll work, since my deck is designed to spit out a bunch of creatures, so leaving 4UU open with a full hand seems like an obvious trap. That's why I stuck with cheaper counters, so they're harder to see coming and play around.
Duplicant - Definitely worth running, it's just again a matter of all my copies already being in decks. Added to the wishlist, though.
Fierce Empath - Considering my general, I don't really see much need to run creature tutors.
Gilded Drake - Seems good, I'll add that one to the wishlist too.
Psychic Membrane - I prefer to get my CA as an EtB effect in this deck, so I'd rather try to fit in Wall of Blossoms and Jungle Barrier over this guy.
Kavu Climber - 3GG for a 3/3 doesn't really cut it, even with the cantrip.
Pygmy Kavu - Seems rather situational, but I'll track the black critters I see in the next few games and decide then if he's worth it.
Regal Force - It looks good, but I don't know if I want to run a creature that expensive to draw cards when I have so many cheaper creatures already giving me plenty of CA. Similar to Biomantic Mastery.
Slithermuse - The problem is that I have a feeling I'll have an easier time keep my hand full than most other decks, so I don't know how many cards he'll really be able to net on average. Once again, I'll track this for a few games before I completely rule him out.
Sphinx of Lost Truths - Already in the deck.
Pelekka Wurm - I don't really think it's an efficient way to gain life, and I'd rather not need my creatures to die to get cantrips. If I really need a way to gain a ton of life repeatedly, Jaddi Lifestrider might be worth testing. He does surprsingly well in my Kresh the Bloodbraided deck.
Thanks for all the suggestions!