• Brain Freeze ended up being a power outlier which encouraged passive play. Trying out a simple two-word card in Radstorm which has similar magecraft benefits while accelerating the game.
• Follow the Bodies will hopefully provide burst artifacts for the game-objects decks (e.g. Brudiclad, Pingers) while synergizing with spellslinger.
• Drown in Dreams will hopefully help mill out with Brain Freeze's loss; straight upgrade to Stroke.

• Finale of Eternity getting swapped for an instant-speed version with less demanding reanimation thresholds in Black Sun's Twilight
• Aether Snap has only been cast once in all the times this cube has been drafted. Trying out Grisly Spectacle to help the mill strategy a bit and also to increase creature removal.
• Corpse Dance will hopefully give some instant-speed spice to Black and put large creatures into play; Legion has also been a somewhat clunky sorcery.

• Mysterious Stranger seems like an interesting snapcaster variant in red; Magda is cool but slightly misleading.
• Bitter Reunion provides haste and bins a card - trying it out over the underwhelming symmetrical pinger.
• Starstorm hates on creatures a bit too much; Final Fortune will hopefully assist the combat decks a little (and there are enough stifles / reintroducing Obeka to help mitigate the downside)

• Magnetic Mine was underwhelming as a symmetrical pinger; Krark-Clan Ironworks may be too extreme but testing it out to spice up the X-spells.
• The Ancient One over Nymris, Oona's Trickster - Nymris is amongst the least popular legends. Hopefully the Ancient One having some reanimator and mill synergies is a little more interesting.
• Obeka, Brute Chronologist returns, replacing Abaddon the Despoiler. She offers a different form of strength on your own turn, while also having an oddball political option on others' turns.

Other considerations: Laboratory Maniac and Monumental Corruption are on the maybeboard, though I wonder if they're too polarizing. Kaervek the Merciless has never been played as a commander; if he is not a useful reanimator target he goes on the chopping block. The two Izzet split cards also might get swapped out in a coming set.