Omnath, Locus of Mana

Hey

Great start to the deck

Here are some ideas to consider:
1) I can tell that this deck first win condition is Omnath, so cards like primal rage, rancor, and/or rouge's passage will help better push damage through
2) Cards like Ant Queen, Hooded Hydra, and Hangarback Walker can enable you to use that extra mana to go wide and attack with alot of creatures. If you run a card called Greater Good, that can not only help you draw cards but can sacrifice Hooded Hydra or Hangerback at opponent's EOT for an untapped, ready to attack army

Here are some cards that could be removed"
Rites of Flourishing: Helps opponents more than you, if you need an extra land drop, there exploration
With Omnath generating alot of mana, I am not sure defense of the heart is really needed to put them into play
Edritch Evolution is a card that relies on you having the right CMC costed creature out to search for the one you need which can get sketchy

Nin Deathmantle is only good if you are willing to recur the creature again. With Omnath, that may not work as well as you think (but you may need to talk to askamagicjudge.com about this one)

Momentous Fall is a good way to stop people from removing Omnath while getting some card draw
Greater Good is better cause its repeatable (even tho you have to discard three cards to it, but that shouldnt really matter if omnath is huge enough)

Also, Greater Good enables the token generators of hooded hydra and hangerback at opponet's end step for that army
Genesis Hydra is a good card cause it comes down as a large creature, heads up tho, its not Genesis cause you only get one card from Genesis Hydra. Genesis allows you to get all cards wth CMC less than or equal to X where X is what you spent to cast it. Keep that in mind

So far

- Rite of Flourishing
- Edritch Evolution
- Nin Deathmantle
-Momentous Fall
-Tranquil Thicket
+Primal Rage/Rancor
+Ant Queen/Hooded Hydra/Hangarback Walker
+Darksteel plate
+Greater Good
+Rouge's Passage