Swap Underdark Rift for Ominous Cemetary; very similar effects but the latter doesn't require a d10 (funny, but not ideal for convention play).

1. Move Screaming Nemesis, Pyrokinesis, and Sentinel Dispatch to the Hall of Fame.

2. Add more support for dedicated storm deck Helm of Awakening, Lotus Bloom, Gamble, Vessel of Volatility, Strike it Rich

3. Give midrange a few more anti-aggro tools (Mogg Mobb, Wall of Earth, Invasion of Karsus) as aggro has been running the table recently.

4. Cut some underperforming 4-mana dragons and upgrade them to 6 mana dragons; goes well with the Dragonlord's Servant->Urza's Incubator swap.

5. Go up on forks and X spells as finishers for control (who doesn't love forking a 10 damage fireball?)

6. More support for draw/discard/madness synergy as it seems to finally be viable.

Cuts

1. The top end of Goblins - cards never seem to make the cut. The most recent draft had a very successful Blitz Goblins deck with a curve stopping at 3.
2. Cool but hard to use (and in the case of Grapeshot potentially misleading) Spells combo cards.

Adds

Cards to help support discard synergies. Very curious how these play. I still don't think that discard/madness type synergy can support an archetype in itself, but it may be a subtheme or minor synergy in some existing ones. I'm curious to see if any of these cards end up being good enough, especially with some of the newer creatures that rummage incidentally (e.g. Veronica, Dissident Scribe, Reckless Detective)

Adding Hall of Fame cards to the maybeboard.

Major update - includes multiple paper-only iterations that didn't get reflected in Cube Cobra between drafts.

Adding tags to cards to keep track of which decks/synergies they really help enable. This is not intended as a draft guide; it's really for my bookkeeping as cube maintainer. This data makes it easier to find replaceable cards. E.g. there are a lot of generically strong 4 and 5 drops that don't specifically enable any one deck. It's good to have generically powerful cards, but there are far more generically powerful cards than I have room for.

First pass, covering about half the cards.

A lot of changes here, but the big/systemic on is removing all of the 2 mana rocks.

Rationale: Midrange decks with 2 mana rocks have grown dominant in recent drafts, and players have felt increasingly obligated to first pick 2 mana rocks. This is not fun or interesting in draft, and leads to decks feeling a bit samey. Cutting rocks will diversify archetypes and make space for more interesting cards.

Major update for a bunch of sets I missed.

Some Priorities:

1. Make cheap aggro better (i.e. aggro that plays one drops. Aggro that plays 3-5 drops is already good.)
2. Give more support for go-wide strategies.

Cutting a few categories of cards:

1. Anti-aggro cards (2 mana defense 2 for ones e.g. careless celebrant), walls (wall of earth) etc.
2. Cards that never really got played (both phoenixes, Pia, Awaken the Ancient, Chandra's Regulator).
3. Cards being directly replaced (Spitemare -> Ill Tempered Loner)
4. Cloud/Glimmer posts. They make for some all-or-nothing drafts and games, so I'm experimenting with cutting them. Major concern is that it may be hard for more than one player to play big mana without one of them using posts).

Categories of additions:

1. Some generically good cards (3/3 haste for 3, various 4-5 drops, lands).
2. Spells-matter support. Lots of adds here, some of which are essentially dupes of existing cards (bad kiln fiend, another ping-when-you-cast-a-spell 2 drop).
3. Spells combo. Dual strike, rummaging treasure cards (excellent with bonus round).
4. Madness synergies. Madness will never be a whole archetype, but I'm hoping that adding Lightning Axe, Rootwalla, and Skophos Reaver (along with the good rummages) may make the synergy easier to use.

Adding as much support as possible for go-wide, trying to see if it can compete with midrange, mana-rock decks.

Cutting cards that usually weren't good enough.

Built to Smash - targetting only an attacking creature is an annoying gotcha in casual games.
Gamble, Tibalt, Throat Wolf, Funny but not actually very good. May be added to a "goofy" draft set option.
Peak Eruption - either underpowered or backbreaking in any given game; funny but won't be missed.

Original intent was to have players draft mountains (functionally forfeiting picks) in exchange for first pick of the cards that didn't make it into packs. Ended up not being popular or particularly interesting. New approach is a single mountain which makes drafting it more powerful/appealing and helps make more room in the cube.