automatic card shuffler mtg for 1-2 Decks, Auto/Manual Mode, USB-C Rechargeable providing more contact area with the playing cards Svertmer Automatic Card Shuffler|1-2 Deck

And some of these do both, which Ill point out as I go, rather than repeat myself

Burn/Ping Spells These cards give you direct damage sources to turn your commander into a ludicrous card draw engine

Its a lot easier to generate counters on some permanents than others, and so being able to redistribute them in partial amounts (without relying on dumping them all on the Ozolith when stuff dies) unlocks some nice gameplay synergies

Whispersilk Cloak [Best Equipment for Unblockable Attacks] Even someone whos just learning how to play Magic understands that hitting your opponent with a creature is rarely a straightforward affair