Yubel's name may be a Japanese pronunciation of the German "juwel" (pronounced "you-vell," with b/v pronounced the same in Japanese), meaning "jewel" or "gem"
One mana is not a significant tempo cost which is important when investing in something that has no effect on the board
There is something about the first few turns where players are judging you based solely off their knowledge of the commander of choice, then you cast Squirrel Mob into Squirrel Wrangler and they honestly dont know how to react
MUR, MA, and BWR do not exist in English sets
Unsurprisingly all the less balanced cards come out of sets like Commander
It encourages interesting deck-building choices and incentivizes you to play self-mill effects, fetchlands, and altogether diversify the card types in your deck