This is a representation of my physical cube as-is. There are some odd absences because I just haven't gotten my hands on certain cards.
There is one non-English card in the cube: an Ephemerate in Japanese.
Restrictions:
Only cards that were printed in draftable paper sets at common.
No functional duplicates.
Cards referencing dungeons and the Ring are not allowed.
The cube has translucent sleeves, so dual-faced cards are not allowed.
The card I'm most excited for in this update is Magmakin Artillerist. In hindsight, I should also replace Writhing Necromass with Chitin Gravestalker. Flood the Engine is also apparently quite good in Aetherdrift limited, but the cube already has better versions of the same thing.
I like the idea of Start Your Engines, but there weren't a lot of impressive payoffs at common.
Light of Hope has actually been in the cube for a while, but I accidentally entered an extra Unbounded Potential instead of it. Bartered Cow can give a bit more value to discard decks. I'm undoing the swap Nettle Guard-Cathar Commando swap, as the Heroic/Valiant archetype will probably not receive much future support.