Try this Promising Lead for an extra Lore, quest with Basil, then trade up by using a small character to remove big threats
I could conceive of Walking Ballista being too powerful for some Cubes- maybe you have a heavy focus on creatures with one toughness that dont generate value
Its not a top-tier strategy, but it can be very hard to interact with in Best-of-One since youll be dropping bigger slimes almost every turn
5 Tivit, Seller of Secrets Can Easily Create Infinite Turns Tivit, Seller of Secrets, is a late-game commander, but it can still be very impactful
This goes doubly so in the modern day of Magic where creatures are often printed with enter the battlefield effects that end up being much more important than their power and toughness values
The Arena client lacks the infrastructure for fourplayer matches, and the card pool does not yet include the tens of thousands of cards legal in paper Commander