RisenDeep

Why only 3 [[Stromkirk Captain]] and 2 [[Captivating Vampire]]?
It could be a bit odd but did you consider [[Vampire Nocturnus]] as an option?

The deck I played way back when Zendikar was out and we had access to Nocturnus is working in Modern with some adjustments. It was based on Viscera Seer, Bloodghast, Malakir Gatekeeper, Kalastria Highborn and Vampire Nighthawk together with Vampire Nocturnus

Has Thieving Skydiver seen any play in standard so far?
I guess since the DnD expansion came out, there are a lot of Artifacts to "borrow"

What is your target format? I'd expect different outcomes on different formats and maybe some mana ramp. Voltaic Key for example could make a difference, what if you create a lot of those tokens to just burn them into mana like the Thopter Foundry deck did with Crank-Clan Ironworks and so on

Would like to see this format revived

Don't understand your comment because it says
"At the beginning of your upkeep, if Gigapede is in your graveyard, you may discard a card from your hand. If you do, return Gigapede to your hand."
So it is an additional [[Phantasmagorian]] even if it might not be that powerful

They already did with [[Faithless Looting]] which was also kind of a staple for a long time

On the other hand, putting [[Witch's Oven]] in makes it even stronger

Once in a while I played something similar, how well does it go without [[Gigapede]]?

Snow has become rather powerful over the years. For example see [[Tundra Fumarole]] which provides a 4 damage shot for 'free' as you get the invested snow-mana back that turn or the snow-tutor [[Search for Glory]]. I also like the new Zombie legend [[Narfi, Betrayer King]] which can simply return by spending some snow-mana.

I choose this color scheme not just for [[Aegar, the Freezing Flame]] but also [[Tundra Fumarole]]

Ever thought about putting [[Vito, Thorn of the Dusk Rose]] into this as well?

Think about [[Aether Vial]] to speedup things a bit for you. Also you should have some more continous bounce engine rather than spending all cards of your deck just for it. I can for example think of [[Surgespanner]] or have something that can continously ping for damage so [[Sigil of Sleep]] will trigger more frequently

Those decks usually run a couple of [[Blue Elemental Blast]]/[[Red Elemental Blast]] and [[Hydroblast]]/[[Pyroblast]] as same as [[Force of Will]] as backup while [[Painter's Servant]] hasn't hit the table

[[Stoneforge Acolyte]] may also fit perfectly into your deck. It requires Allys to be present but [[Stone Haven Outfitter]] is already an Ally so it should generate some value. Maybe then you won't need that much Equipment anymore and can focus on some spells as well. [[Open the Armory]] for example

Wouldn't [[Entomb]] be a better option in Legacy instead of discard or mill yourself?

Maybe because it is as expensive as hell

Had the same thoughts, why do you rely on an opponent blocking your Apostel and don't instead discard it, for some benefits perhaps. Some Serum Powder can also help to minify your deck in beforehand.

There is a starter shell that benefits from the 'new' London Muligan rules, consisting of 3 different cards and a playset each: Serum Powder, Pull from Eternity and Gemstone Caverns. It can not just clear your library (more or less successfull) but also plays well with some other "exile abuse" cards. For example Misthollow Griffin, which can be played from exile and also delivers 2 more devotion.

Another card that comes into m mind is Spoils of the Vault. I'm unsure if it is currently banned in Modern but can also help to dig for your needed combo pieces.

Damn, I have to toy arround with this as well :D

This deck looks interesting but I have concerns about your win-con. Spamming [[Ancestral Vision]], [[Crashing Footfalls]] or [[Restore Balance]] might not be as fast as it should to surepass in Modern. Maybe some Cascade spells would work better than [[As Foretold]] as it doesn't matter if those spells are countered as long as Cascade Ability stays on the stack.

Another idea I have is to use [[Izzet Guildmage]] to copy the more important ones of your spells, [[Crashing Footfalls]] for example to get 4 tokens instead of just 2

Time for some Goblin-Mountain flip cards then ^^

It definitely wins the price battle!

When I played Tatyova in Standard, I comboed it up with World Shaper. I know it may be a bit difficult for EDH to mill yourself just to get some lands pushed back from your graveyard but it would play well together with Tassa's Oracle