Unfinity

Due to the nature of cubelet being a crafted pile of cards AND the new treatment of acorns vs. not to represent "eternal legal" cards, this snapshot is for cards that would be good for an Un-Cubelet with the assumption that you as the cubelet builder could decide if it is good for your cubelet or not. Also, because we're looking at a Un-Cubelet, commentary is going to be minimal. 

Attractions: This new feature should act similarly to the contraptions. Maintain a stack of attractions (maybe one of each) that is a shared library and graveyard, but the attractions are opened individually on the battlefield. All attractions and their variations are fair game, regardless of their acorn status, and therefore, will not be highlighted on this snapshot.

Standard Procedure
Always changing based on what is in standard, just have to look up the card. Because of end of turn, once it goes to the graveyard, it could become a new card if returned to someone's hand.

Gobsmacked

Jetpack Janitor

Main Even Horizon
Rare to find a board wipe for an Un-cubelet, even if it has conditions...

Trapeze Artist

Animate Object

Bag Check

Command Performance

Unlawful Entry

Black Hole

Down for Repairs

Six-Sided Die

Xenosquirrels

Art Appreciation

Devil K. Nevil

Juggletron

Slight Malfunction

Blorbian Buddy

An Incident Has Occurred

Jermane, Pride of the Circus

Killer Cosplay

Mistakes Were Made

Comet, Stellar Pup

It Came from Planet Glurg

The Space Family Goblinson

Clown Car