Need:
Undead Gladiator
More cycling lands
Decree of Silence
Copy Enchantment

Consider:
Diplomatic Immunity
Eternal Dragon
ETB effects to reuse with Astral Slide? Gonti, Mulldrifter, Cloudblazer, Sun Titan(!) etc
Rune of Protection: X (Green > Black > White / Red > Blue)
Sundial of the Infinite - Make things disappear permanently with Astral Slide
Imprisoned in the Moon/Darksteel Mutation - Fetchable removal that can deal with commanders
Mind Stone
Darksteel Ingot
Mystic Remora - Card draw
Shred Memory - Tutor for Fluctuator
Plea for Guidance/Ethereal Usher/Netherborn Phalanx - Tutor for New Perspectives
Solemnity - Stops some annoying stuff
Stir the Sands
Traumatic Visions
Oketra's Attendant
Wasteland Scorpion
Sanctum Plowbeast
Hedron Archive

Considered cuts:
* Swat - Only kills small stuff that probably isn't very important to kill
Akroma's Blessing - Basically only stops red boardwipes
* Migratory Route - Basic landcycling is good, but I never really want to cast this
Decree of Justice - Is this too expensive to use for the effect?
Dirge of Dread - Can be used to push through a large Horror or Champion, but otherwise doesn't do much
Chasm Skulker - Not really cycling related
Oblivion Ring - Not related to cycling, but removal fetchable by Zur is nice
* Aura of Silence/Arcane Laboratory - Not related to cycling, but can be fetched by Zur and slows the game down for me to do my plan

Cut because they are in other decks:
Plea for Guidance
Lonely Sandbar
Barren Moor

Cuts:
Megrim, Liliana's Caress, Waste Not - The few wheels I have aren't really enough to reliably trigger these
Scion of Darkness - Seems unlikely that I will be able to get to 8 mana?
Arrest, Pacifism - Low impact
Aura Extraction - Probably too narrow. Can save Drake Haven etc from removal, or possibly shuffle something annoying in response to a fetch, but seems unlikely
Rogue's Passage - Sneak through a huge Stoic Champion or something... But I need colors, and activating this is expensive
Steel of the Godhead - Low synergy
Unburden - Mind Rot is probably not efficient enough
Library of Leng - Doesn't work because with cycling, discarding is a cost not an effect
Decree of Pain – I'll never have enough mana to cast this, and even cycling it is expensive
Manalith - Replaced with cheaper ramp
Jace's Archivist - Reusable wheel is nice, but he's very fragile and slow without boots
Spell Snip - Expensive Force Spike
Dig Through Time - I don't really want to exile stuff from my graveyard
Ruthless Sniper - The effect is probably too minor to pay 1 mana for each instance of
Shadowstorm Vizier - +1/+1 is probably too little to make this able to kill someone
Whispering Madness - Cipher is nice, but I don't have a lot of targets to cipher on