Those Planeswalkers can be your commander
As such, card draw, removal, and two-for-ones are the name of the game
Memories Returning This is a draw spell that gives you the 1st, 3rd, and 5th best cards from the top five cards of your deck
And this is a Command Zone able artifact lover as well as a player in the 99 of things like Esper Artifacts and Dimir Artifacts
That being said, there are self-mill scenarios that can make it beneficial to stack Rad Counters on yourself too, particularly if you have any graveyard reanimation
Where to Buy Serialized Cards Serialized cards are a bit tricky, because they're usually sold by individuals who happened to open one, or on marketplaces where they tend to be a bit scarce anyway