You can tell which color a prototype creature becomes by the mana symbols in its prototype cost
Rankle, Master of Pranks Ive knocked on lots of mono-black commanders in this ranking, but I like Rankle, Master of Pranks
Cards line up visually when fanned out, which sounds trivial until you have seen a deck where every proxy looks like it was cut during an earthquake
Sorry, If you choose to have two commanders, your deck must conform to their combined color identities
The clearest starting point is looking at these cards that have already been banned elsewhere
The Archive included Commander and Constructed staples, it was artistically appealing, and the cards almost universally catered to the Limited environment, feeding Strixhaven's magecraft and spellcasting themes