• Imposing Sovereign out (getting a little stale), Clarion Spirit in because the guys over at Lucky Paper Radio keep talking about it
• Lose Focus just isn't very exciting, adding Occult Epiphany because reddit loves it
• Ninjutsu is a unique ability, so cutting Shinobi for Ertai Resurrected
• Languish isn't quite flexible enough for Black decks to want to run it, whereas Harvester of Misery is a modal card with reanimate synergy
• Not sure if Hostile Investigator will stick around, but Never // Return certainly isn't
• Nissa, Who Shakes the World wins too many games on her own, Sandstorm Salvager hopefully wins fewer
• Hullbreacher is mainly good in vintage cubes with a lot of "draw 7s". This is not one of those cubes, so swapping it for Smirking Spelljacker

White

3 Mana O-Rings are gone, swapped in removal with mana value 2 and another 1 drop.

Blue

Reducing complexity, Looter Il-Kor gone because of Shadow, Mist-Syndicate Naga gone because of Ninjutsu.

Black

Sheoldred, the Apocalypse was a bit too dominant last draft, God-Eternal Bontu is pretty chunky. Shifted the black curve lower/towards sac with another 1 drop, removal spell and a Transmogrant's Crown

Red

Added Play with Fire for spellslinger decks (still haven't seen anyone put one together) and Spiteful Prankster for Rakdos sac decks.

Green

Wanted to put Plow Under back in but can't find the card. Will do eventually

Multicoloured

Kiora, Behemoth Beckoner has been showing up in Pioneer, seems better than Nissa, Steward of Elements, which has a tonne of words and does nothing. Also, Goose Hydra.

Trying out Heartflame Duelist. No hate against Showdown of the Skalds, but want to keep the Boros curve low.

Very keen on Scalding Viper, especially the adventure half. Niv-Mizzer, Parun is a more exciting build-around than Ral, Storm Conduit.

Grist, the Hunger Tide actually has too many words. Trying out Mosswood Dreadknight.

Colourless/Lands

Grand Coliseum not necessary with City of Brass and Mana Confluence already doing it's job. I realised I didn't want the dice rolling of Ebony Fly. Myriad Construct is pretty boring.

Added Metallic Mimic and Nettlecyst for Johnnys/Jennys, Syr Ginger, the Meal Ender for spikes.

Ordered some cards from LCI.

Consider cutting Dream Trawler, Elder Gargaroth, Fallen Shinobi, Uro, Titan of Nature's Wrath, Nissa, Voice of Zendikar, Primeval Titan, Ilharg, the Raze-Boar, Trostani Discordant, etc. Basically chunky midrange bois/cards with a lot of words that don't do much.

Adds to consider are in the maybeboard.

Midnight Reaper has been replaced by Sheoldred, the Apocalypese

Also swapped the printings of some cards with new proxies

• Urza, Lord High Artificer is fun to build around, while God-Eternal Kefnet is kind of clunky
• City of Brass provides fixing for multi-colour decks while being faster than Evolving Wilds
• Ophiomancer is a power bump on Woe Strider
• The Meathook Massacre is a power bump Bastion of Rememberance
• Oracle of Mul Daya is a more exciting ramp/value inclusion than Beanstalk Giant
• Ancient Tomb is way more powerful than Cryptic Caves and better fits what most monocoloured/colourless decks want to be doing.
• Last of the Signets replaced by Talismans.
• Omnath, Locus of Creation is another fun build around and noone was picking Prismatic Lens
• Sylvan Library is better value than Regrowth for the same price
• Rishadan Port is more fun than Terramorphic expanse, but we will have to see whether the playgroup finds it too difficult.
• Adeline, Resplendent Cathar is a nice 3-drop and I've got too many O-Rings so Stasis Snare was removed
• Liliana of the Veil is a cube staple while Opposition Agent was kind of overrated for cube
• Liliana, the Last Hope is also a cube staple and I'm not going to miss Eliminate

Plus a couple of version swaps

One more change - removing the last Companion from my cube. Not worth explaining the rules. Dream Trawler is a card I removed previously, so not sure how long it will stick around.

A bunch of changes targeted at improving the cube for our playgroup, who only play MtG in once every 3-6 months.

White

• Skyclave Apparition is too wordy, Monastery Mentor is a classic and easy to grok.
• My printing of Fateful Absence doesn't include help-text for Investigate, so it's out for the "does what is says" Oust.
• Wanted to include Maul of the Skyclaves, and replaced Eidolon of Obstruction for power reasons

Blue

• Aether Channeler is kind of like a more interesting Cloudkin Seer
• Add Mist-Syndicate Naga as a second ninjitsu card (see Dimir), replaces Stormwing Entity which played a little awakardly

Black

• Adding some more reanimator support with Recurring Nightmare, and Ob Nixilis Reignited is no longer matching the power of the rest of the cube
• Grave Titan removed, too many unsatisfying games where he lands on curve and there's no real comeback. Replace with Makeshift Mannequin for more reanimator support.

Red

• Too many words on Phoenix of Ash, and playgroup loves goblins so Legion Warboss added
• Pia and Kiran Nalaar not adding enough to aggro, and playgroup not building red artifact decks. Hazoret the Fervent is a more straight-forward curve-topper.

Green

• Wanted another 2-drop and Fauna Shaman is perfect, removed Cultivate as it's a little slow for cube
• Bushwhack is a cool fight spell, and Abundant Harvest didn't spark joy

Multicolored

• Always interested in cards that get banned, so Expressive Iteration is replacing the slightly stale Fire // Ice
• Dragonlord Atarka is cool, Thrash // Threat is lame, easy swap
• Polukranos, Unchained doesn't explain Escape, and the mess with counters isn't worth the complexity. I'm not promising Grist, the Hunger Tide is less complex, but it is more interesting
• Nahiri, the Harbinger is for control or combo decks, but playground is not building these in Boros+ colours. Showdown of the Skalds is a nice swap.

Colorless

• Nobody understood that Sorcerous Spyglass was a planeswalker hate card, and even if they did they probably wouldn't run it. Sundering Titan is a classic cube card for ramp/reanimator decks.
• Card disadvantage of Sparkhunter Masticore made it suck, Ancient Stone Idol is another classic fatty and wanted it in the cube.

General theme is removing cards that don't get picked.

My playgroup aren't massive magic players, and avoid cards with too many words.

There's some unfortunate cuts here - for example I enjoyed the play patterns of Lurrus of the Dream-Den, but don't really want to explain Companion 5 times a draft.

Reminder to self: add Crab and Guenhwyvar tokens to the box.

• Thassa's Intervention is just a little too slow, and Wingcrafter has some great "story" potential - eg. "What do you mean your Clackbridge Troll is flying?"
• Edge of Autumn is a just a nicer top-deck than Farseek, with some interesting play patterns with Crucible of Worlds effects.
• I'm not a fan of "hosing" effects, so I'm happily replacing Stromkirk Noble with the new Dragon's Rage Channeler.
• Exploration has under-performed, too much card disadvantage and just a miserable top-deck. Abundant Harvest seems like a great "glue" card to replace it.
• I actually don't like the non-legendary condition of Persist, but the re-animator needs some more redundancy. Eat to Extinction was over-costed compared to the rest of the removal in the cube.