I decided to do a pass on some of the weaker options available in the Multicolor slots, in the color pairs where the recent Silver-border sets haven't provided much support.

Psychatog is a powerful card, but means far less in a 4 player environment where blockers are widely available. It's replaced with Cybernetica Datasmith, which is an interesting political card, as well as synergy for other Robot related cards that came in from Unfinity.

Rushed Rebirth is a very interesting creature tutor, that can benefit from your opponent's creatures dying, not just your own. Plus, in a 4 player pod, you can make use of another player's combat step to cast it, and get a free creature yourself. A lot of versatile options here.

Chaos Mutation is a bulked up Chaos Warp that can easily remove threats from each player's board. Goblin Electromancer gets the cut here, as it has not seen much play.

Croaking Counterpart, a neat clone effect that can propagate some powerful static abilities from other creatures in play. Icefeather Aven is finally out, since the cube's inception.

I'll probably need to do another sweep for certain cards that feel bad.