If you like making opponents discard you may as well add in a Geth's Grimoire. I've had lots of success with it off of Myojin of Night's Reach in my mono black deck, and I can only imagine the draw power from wheel effects.

Seems fun, I also played with the idea of building a wheel deck for a long time, but never would thought of doing it by combining it with cascade.

Also I like your take on including green, a color that I didn't see as usefull in a wheel deck up to day!

Seems I need to order another commander 2016 deck ;)

My thoughts on possible cuts;

1x Blood Tyrant ... cool in theory, cmc fits the cascade... mostly underwhelming win more card...

1x Wall of Blossoms ... bad early game filler

1x Chain of Vapor ... cool especially with all the wheels, but dangerous and can backfire... maybe just replace with Echoing Truth or just cut altogether.

1x Spine of Ish Sah ... without bounce or artifact recusion this is just overcosted removal.

1x Peregrine Drake ... cool combo piece but you're not playing combo, great with your bounce lands, but I'd still either replace it with Frantic Search if you want it for the 1 turn ramp, or just cut it.

1x Worm Harvest... I ran this in my sultai land shenanigans Mimeoplasm deck along side Splendid Reclamation.... pretty much got either both or neither every time I played it and was so nombo.... can make some great chumps but would still cut it.

1x Guiltfeeder ... can be a great card, usually better in theory than practice

1x Plasm Capture ... very cool but double deep in 2 colors in a 4 color deck seems harsh without a lantern... and may stall you a few turns...find alternate or cut ?

anyways there's a few thoughts at least... hope they help. love the decks direction and a lot of the card choices, and if you wanna give That's Just Not White a second set of eyes and tell me what you think it wouldn't hurt my feelings.

+1, gl & hf

Removals (15):

So Academy Elite, Consuming Aberration, Blood Tyrant, and Guiltfeeder all fit into the category of huge creatures that don't really do anything except paint a big target on your back, seems like they could be easily replaced by more wheel effects, or by creatures who can abuse wheel effects, like Fate Unraveler.

Horizon Chimera, Wall of Blossoms, Spine of Ish Sah, All Suns' Dawn, and Peregrine Drake are all cards with very small effects. With no real way to abuse these effects through blink or the like, these cards end up in a more one and done role, of being used once and then being chump blockers for the rest of the game.

Army of the Damned, Ghastly Conscription, Worm Harvest, Selvala's Stampede, and Treacherous Terrain all seem to want different things from your deck (Tokens, Ramp, Landfall), and are likely diluting your focus on Wheelin' and Dealin'.

Chain of Vapor is just a pretty bad removal spell in general, and is more likely to hurt you than anything else.

Additions (10):

Teferi's Puzzle Box, Arjun, the Shifting Flame, Mindmoil, Jace's Archivist, and Wheel and Deal are all more wheels for the deck, and should probably be pretty high on your priorities list if that's what you're going for.

Lightning Greaves, and Swiftfoot Boots are good ways to protect your general in case of pesky removal spells, and make it so that he can attack immediately upon entering the battlefield.

Cyclonic Rift is simply a better Chain of Vapor, as there's no downside to throwing it out, whether for 2 mana, or 7.

Finally, Thought Vessel, because you've already got Reliquary Tower.

So that took a bit, sorry for taking up so much time and space. Hope you at least consider these changes, and I wish you the best with your deck.