The Death Toll Commander deck gives you a strong black and green mill-based deck to pilot, letting you return cards from your graveyard back to play, though you can only do it once since that permanent comes back with a finality counter
My real conclusion about blue here might just be that you should respect Devious Cover-Up, and it might change how control decks are built, though Unmoored Ego can punish people who go too far.
12 Night Shift Of The Living Dead (Galaxy Foil) - $7.62 One of the sillier mechanics in Magic is rolling dice, and in Unfinity, players got access to a ton of new support for their dice-rolling decks
Meteorite is quite a card with the only real drawback of in its cost
Obviously, rolling a d20, as it usually happens in non-silver-border context, is much stronger than rolling d6 here