Looks fun. I think you are undervaluing Kodama's Reach and Cultivate, 3 mana to ramp 1 + hit more land drops is really fantastic. Definitely better than your darksteel ingot.

If you are looking for more haste, Fervor is simple and effective. Also In the Web of War is cute with tokens.

I would rather have Go for the Throat than tragic slip. Slip won't help you against turn 3 kaalia or arcum dagsson or sisay or whatever. I think Dismember is a good option too.

Necrogenesis is not bad, but I'd much rather spend just 2 mana and draw a card with Nihil Spellbomb. Also Bojuka Bog is auto-include.

If you're looking for space, golgari charm seems weak and artisan of kozilek seems unnecessary. Also vraska and liliana seem worse than just a removal spell or a tutor spell, respectively.

The efficiency of Nature's Claim is hard to beat.

due to the removal and our group's gy hate (sorry), I'd choose the sad robot for your pod chain. The oracle is a great card, but difficult to pod because it's most effective on the field. Anger, though not very often, will be exiled occasionally. That's enough of a reason for me to not want it. the cyclopes is good in your deck, but it has no evasion, so it wont do much. also, haste won't do any good if you just pod it away, so it goes to the same idea as the oracle. Sad robot begs to be podded because of its abilities and it also provides a land. Solemn Simulacrum all the way

Focusing on the pod chain is a bad strategy. Having cards that are strictly good for their board presence or abilities is ideal in a format like this. Besides, you'll have a primary focus when you have birthing pod; sac Prossh, Skyraider of Kher for Avenger of Zendikar, cast Prossh, sac Avenger for Craterhoof Behemoth, win. Or, in my deck, sac a 4 drop, Zealous Conscripts, untap Pod, sac 4 drop, Kiki-Jiki, Mirror Breaker, win. I also have synergies like sac'ing Prossh for Rune-Scarred Demon, or a 3 drop for Purphoros, God of the Forge. It's a combo tutor, not necessarily a value milker like in conventional builds.

metalevolence, I don't like three mana ramp in general. Darksteel Ingot is just a leftover piece from when it was a baby deck. It's mainly stuck around because I play a lot of 1v1 and it helps out with Decimate (one of my favorite cards) occasionally. It will be replaced (probably by Worn Powerstone) next time I order cards. The goal with my ramp is to get a T1 or T2 ramp into a four drop ramp on turn three. More one and two mana ramp is on the way in.

I'm debating Fervor, but I think I like other options because they do something extra or are more versatile. Anger particularly because I can kill it to get an effect, or because I want to add Entomb in here later, and that'll turn into one to haste my team. I'm looking at Into the Web of War right now and will probably test it out.

Tragic Slip isn't in there for an early Kaalia or Arcum. There's plenty of spot removal for them. Possibly too much. Tragic Slip is to knock out a T4 or 5 Ulamog without slowing down my gameplan too much.

I really like the Spellbomb and Nature's Claim. I'll find room for them (Spellbomb will probably replace Necro). Artisan is filler. When games go long Annihilator is good for closing it out, and it's the Eldrazi that I have. Bog is already on my list for my next order too.

Golgari Charm is either enchantment removal or anti Wrath and I like having that on one card. It's never been a dead draw.

Vraska and Lili I've been debating something similar, but the double Tutor on a protected Lili has been great. They may come out later when I get better tutors and removal. Although it's hard to cut walkers in a deck running Doubling Season

AffinityJesus, The pod chain isn't the focus, but if I play an E-wit and have Pod out I wanna be able to get something. Or Fierce Empath which may find its way in. I see what you mean though. Purph is probably enough. Cause once he's out then I don't need to get four drops.