More cuts to make room for lands, these could go some other way, but I think if you want those tricolor cards to make it consistently, you need to have to mana to cast them on time most of the time.

If you don't want to use the triomes, any other set of untapped duals would also work fine probably.

I assume you omitted the fetchlands originally because of price or something, but they really are hugely beneficial for every deck, but especially for the landfall deck. If you can't swing it and don't want to proxy them, I'd look at reconfiguring all the landfall stuff entirely.

Mostly just trying to make 5 more slots here for lands, but also adding one more ramp/cheat target and some more support for sac decks and the landfall graveyard stuff.

Oketra's Monument is a white card.

I think these multi cards are below the standard of the rest or aren't doing enough vs comparable mono-color cards.

(also unrelated moving some cards that I don't consider multicolor)

These cards didn't copy over right, so I'm just removing them, but they seem cool.

However, in my opinion, if you're going to make customs you could go a lot further to making the exact effect a given deck wants.

Especially Redactors and Weird Science don't feel like something I even necessarily want in the UW or UR decks. And Max would fit better in RB than RW.

Mariyah is also pretty close to Nissa, Steward of Elements

Another kind of hard color because ramp, stompy, and sacrifice decks are all here and want pretty different cards. I think BG is suffering in this list currently.

Cut most of the targeted spells and slow enchantments for more proactive stuff. The risk of getting blown out on fight spells or doing nothing with enchantments is so high.

Move some other spell functionality onto multipurpose creatures as well.

Tried to improve landfall and ramp the most, they play the best into green and need pretty specific stuff.

Added another Pod effect and tried to shore up the curves there so that Vivien and Pod can both actually go all the way up the chain sometimes.

No real big changes here, just getting rid of some cards that don't do enough to replace them with things I think fit better.

Tried to fit in a few more humans so that the Winota deck has a higher hit rate and a few more creatures that go in the spells deck without being spell-deck only creatures.

Through the Breach put in as a second Sneak since you said you were interesting in supporting that deck.

More cute knights stuff, mostly because I think Fervent Champion is a good fit with the artifacts you already had.

As with blue, removed some of the 'fair' storm cards, I think they were a trap.

Of note, Having meld with Battlements is fun, but not worth the slot I think. Maybe offer it for free when you draft Garrison?

This felt the hardest to make work, black wants to do a lot of things and most of them don't have much to do with each other. All three sac decks kind of want different output and most of those spells and creatures don't fit at all in a graveyard-y deck that needs lots of slots for spells and targets.

Still, tried to improve the number of crossover targets, (especially between BR and BG) beefed up the ability for UB to actually get back something meaningful

Also cut some of the worse cards (or cards that didn't really have a home deck) and tried to replace them with some general threats because all the sacrifice decks do want to keep pressure on if they can.

Very small knight theme, since it sort of fits with the artifact sac and is kind of cute.