What she cares about is simply that there are creature tokens
Artifacts are fantastic at generating infinite loops like this, so the Excavator is always a useful card to consider as a win condition for such decks
Momoko sold out in a day, the Showcase: Duskmourn foils sold out in five days, then EN Foil Miku in six days, and only recently did the EN nonfoils sell out
Drill-Skimmer I admit when I first read Drill-Skimmer, I thought it got hexproof when you had an artifact, making it a pretty good card for Voltron decks
Key cards that youd be looking at are the likes of Ethereal Armor, which gets insane with a lot of other auras, or Blazing Shoal which you can use to make a creature huge for not much mana
As such, Wizards of the Coast really wants this thing to be opened later rather than sooner