There are only nine other spell cards in the deck, not including the Commander, so this setup is entirely welcoming to new players who just want to get a feel for the game, but also want to be competitive in any game they play
Suddenly, a card like Awaken the Erstwhile makes you draw a card on each of your opponents upkeep steps
Team Rocket Returns is another set that boasts several Rocket's cards, including many of the most expensive
some reasonable partner commanders would be Tana, the Bloodsower and Kediss, Emberclaw Familiar for their powerful saboteur effects
I would generally value the bonus milling at zero or perhaps even a slight negative if it risks helping out my opponent, however, so the base effect must really be strong enough