I know you like the cascade focus but for wheel deck Nekusar, the Mindrazer maybe more useful for competition

It's always a "may" for Geth's Grimoire, so it's up to you if you want to draw 50 cards :)

If you play so many wheel effects, adding a reanimator package to the deck feels like a must. Especially reanimator spells that can take creatures from the opponents too...Animate Dead, Reanimate, Necromancy, Dance of the Dead and others.

Memory Jar is a must in such a deck and Goblin Welder and Daretti, Scrap Savant would go along well with that...Mindslaver is also worth a try, since you give the opponents full hands often enough. What's better than using their full hands to ruin their own position in their own turns?

cool deck, already looks like it could function very well.
if you want to include some hand denial, you could run Words of Waste which is also a discard engine for nath of the gilt leaf, megrim, etc.
depending on your budget; Leovold, Emissary of Trest in the 99 could be super mean with all your wheels.
i would think late game Rise of the Dark Realms would be a win con if you had haste enablers such as Fervor.
if you want to get more value out of all those cards you wheel away, Kozilek, Butcher of Truth can shuffle your graveyard back into your library.
Yawgmoth's Will can let you replay anything in your graveyard until eot.
finally you have access to blue, no harm in running Arcane Denial or Disdainful Stroke

You could consider Umbral Mantle over Magewright's stone as it makes infinite colorless mana with kydele if you resolved a wheel effect this turn.

I second Geth's Grimoire.

I have an Arjun, the Shifting Flame deck which used to have milling as a possible path to victory. I had heard milling in EDH isn't the most effective because of the deck sizes, but wanted to try it anyway. Let me tell you that aside from that, people don't like being milled so it is likely to draw you hate. I recommend taking out Jace's Erasure. I took it out of my deck too but I kept Sphinx's Tutelage because it is just that potent.

Other chaotic, extra cast cards include Possibility Storm and Eye of the Storm. I have actually found that Arjun/Mindmoil are able to play around the possibility storm better than other decks can.

Another utility thing to go with Yidris (or any other wizards or other creatures) is Diviner's Wand. Equip your commander with it and start wheeling then swing for a one hit kill at an opponent.

I had this nice long response typed out then I hit backspace and went back a page. Shit.

Nite_Owl12: I know Nekusar does a better job, but Kydele, Chosen of Kruphix is more interesting to what I want to do.

freezerboy: I didn't notice the may! I'll take another look at Geth's Grimoire.

Winterblast: I definitely agree I need some reanimation and I think Memory Jar is great, but due to budget issues right now, I can't spend a whole lot on a deck. I agree if I run a few more artifacts some good recursion would be great.

Grind: I actually like the Words cycle, but they actively take power away from Kydele on top of me having to pay for them. Leovold is good for control, but he actively stops my opponents from triggering discard or draw effects. Kozilek and Rise of the Dark Realms are both great inclusions. I should get those. Arcane Denial looks really good, fills hands and gives my commander a mana tap. +1 Umbral Mantle has been added. I am considering adding Kruphix, God of Horizons, Gemstone Array, Pemmin's Aura, and even Galvanic Alchemist.

RicketyEng: The difference between Arjun's deck and this deck (assuming you had no wheels) is that my opponents are also drawing and discarding cards. Effectively, Jace's Erasure mills on top of the wheel effect, but I will try a few tests without it. I took out Possibility Storm because casting a wheel but getting the effect ~1/3 of the time (7 wheels/24 sorceries) isn't the best plan, but maybe I am being short sighted. Eye of the Storm is a must add for this deck, thanks! Diviner's Wand looks like pretty good.

Sorry that responses were short and took a while to arrive! I had to rewrite all of them, so it took me a while to remember.

GoldenDiggle You may want to look into eldrazi spawn tokens if you want a ton of mana-especially Rapacious One