The 32 lands is an experiment. I did have it at 34, but kept getting flooded. I typically have the most mana on the board, so I'm not too worried about it. If it plays poorly, I'll look at moving it back up.
As far as the card recommendations:
Tiger ClawsVorrac BattlehornsPrimal RageWith Omnath, trample wins games. Primal Rage is probably the weakest of the three, but it still creates a must-answer situation on the board. Tiger Claws has won me at least half a dozen games because of the flash ability.
Constant MistsAwesome
BurgeoningOmnath's ability to store mana makes this even better than in most decks. A turn one Burgeoning typically leads to a 90% win rate.
Soul FoundryThis is an experimental card for this deck, like
Mirari. I haven't gotten either one out yet in a game, so I'll see if they work first.
Collective UnconsciousAs I think about it, I can see the point. 3-4 creatures in play may not make this effect relevant enough. I'll keep an eye on the next few times I draw it to evaluate it.
Thanks for the comments. Any glaring holes as far as cards I don't have in here?