vikingincarnate

clockspinning is a must.

I agree. The more I've been thinking about it, the harder it is to justify not running U/R. With blue, it also opens up cunning wish, so I could keep a win con in the sideboard.

Thanks for the insight, great comment.

Because I have no tutors for anything, and I'm so reliant on the draw to build a storm count, I figure that any amount of deckthinning I can get will be valuable, even if I do only pull a few cards out.

If you're looking to take down a deck with a few big creatures, consider adding the Arachnus web/spinner combo. The webs only last a turn, but if you can keep shooting them out of your graveyard, you can lock them down indefinitely if you have enough spiders.

Yeah, you need a ton of cuts, but you're also missing some really powerful token staples:
Essence Warden, Emeria Angel, Luminarch Ascension, parallel lives, Doubling season, Entreat the Angels, Eternal Witness etc etc etc
You're really lean on artifacts, too.

Decide what you want to do, then decide the most efficient way to do it.
If you want to use tokens, then drop a ton of deadweight creatures and enchantments. You don't need Hand to hand, emblem, fervor, sphere of safety, Mongoose, Angelic Renewal, Proper Burial, and those are just the enchants.

Decide what you want, then remove everything that does not EXPLICITLY help you reach that goal. THEN you can add back in 'fun' or 'possibly helpful' things.

Suggest taking out 2x Llanowars for 2 more arbor dryads

I'd also take out 2 each of your rare equips, as any one equipment, either a cloak or Astecism, and a really big hydra should be enough to win you the game, and instead take 3x Utopia Sprawls, 2x Astecism, and 1x more hydra.

Just an idea, might need to play around with the numbers to see what works best.

could definitely use more ramp.
Consider Utopia Sprawl or similar, it'll boost the Arbor dryad's effectiveness, and give you more green symbols for the primalcrux.

Also, consider throwing out your Arial Predations for Gravity Wells.

You also only have one equipment that protects your creatures. I would strongly advise taking something to prevent your guys from being targeted, either Vines of Vastwood or Asceticism.

One thing that would really help you manage the speed of the game would be adding in some boardwipes and expanding your control spells. A few more Oblivion Rings, or Journey's to Nowhere would help with the control. Other control pieces you may consider (but might be a bit pricey) are Story Circle and Runed Halo (each roughly $1.50/each). For general speed (again, maybe a little bit expensive) are Serra Avengers that can really help your early game if you make it past the first few turns.

Cheap sweepers you may want to consider: Harsh Mercy and Day of Judgement. Harsh Mercy allows you to keep your humans, and DoJ is a universal sweeper. If you can keep the board pretty clean until you have your mana base, you can kind of avoid needing as much speed.

If you think you need more bodies on the field, something like Raise the Alarm can get you cheap blockers that can also trigger your Angel's Tomb at instant speed.

Living death can wipe their field and bring back your dragons.

In general, I think you should probably treat the whole deck like a red-black reanimator deck... in which case you could probably use some more self-discard, and more ways to fill the grave quickly, like entomb... and you could probably drop a few of your reanimate targets.

It is already pretty budget-friendly, but you could drop the 2x tempered steel for 2 more galvanizers, and drop the Darksteel Forge and whatever else you can't find cheap for a myr turbine and/or a loadstone myr.

Myr turbine + unwinding clock is a very powerful combo.

Yeah there's no reason for reassembling skeleton.
I'd drop all of the Mikaeus for Carrion Feeders, and at least two unbreathing horde for Stromgald crusaders. You don't want many cmc3 cards, because that's what you'll be dropping your lords on. (also consider adding Cemetery Reaper)
Cabal Coffers and Phyrexian Arena can also help out here.

If you still feel like you need a bomb, Helldozer, Grave Titan, or Noxious Ghoul can end the game in a hurry.

Can you explain the name? This is the kind of thing that will keep me up at night. Where exactly is the sandwich?

What about soulcatcher? If you throw in another sac outlet or two, like fanatical devotion, you'll be able to hit both your Aerie and your skullclamps when your birds start to get large.

Spellskite is not legal in a monoblack deck. The phyrexian mana is colored.

Consider Leatherback Baloth, Khalni Hydra, and Primalcrux. I'm usually not a fan of the Engulfing Slagworm unless you're running lure. Vorinclex also makes a great Tooth and Nail target, as he ensures that you'll be in great position the rest of the game.

Also, since you've got very little control, consider adding Spearbreaker Behemoth.

Honor of the pure? Crusade? They might make your Mentor have some issues, but could be strong.

Scourglass might be a better boardwipe for you. Also, your curve is really high. You have too many cards of CMC 6+ and not enough ramp to get them out. Either lower the curve, or add things like Master Transmuter or Tinker to help cheat things in to play. If you want control, you're also going to be lacking. You don't have enough fast artifacts to get the most out of Dispatch.

Consider getting more artifact creatures to get the full effect of Arcum. Phyrexian Walker and Ornithopter, the black and blue mana myrs, etc. That way if any of your big artifacts get exiled, you'll still end up with enough resources to bring out others. Master Transmuter and treasure mage can also help you manipulate your big ones into play.

If you have snow lands laying around, you could always go Cover of Winter as a huge stall tactic. Luminarch Ascension has also really come down in price if you find you need a win condition.

You don't have a lot of heavy black costs. Splash blue and run something like sigil of sleep? It would also open up some more pinging options.