If you can untap with it in a Commander game, you just got six cards from their draw steps alone
Besides that, youll want as many energy cards as possible, prioritizing them in this order: Galvanic Discharge Tune the Narrative Aether Spike Tempest Harvester Electrozoa Thriving Skyclaw Smelted Chargebug Inventor's Axe One exception worth noting is that while Inventor's Axe is pretty bad on its own, it can be excellent if you have enough Cyclops Superconductor
When one owns a banned card, the card imparts an inherent feeling of rebelling against the system simply because the authorities have ruled against the card
So far, the only two Planeswalkers we know to still have their sparks in-tact are Chandra, and the recently de-Phyrexianised Ajani
But I think a lot of people out there are like me - we're nostalgic for these cards because of how much of our childhoods hinged on collecting them
Even without that level of nonsense, its hard to make a commander that so thoroughly cheats on mana costs fair