Bebop, Skull & Crossbones + Rocksteady, Mutant Marauder Technically only Bebop, Skull & Crossbones draws cards in this partner pair, but it would be foolish to run it without Rocksteady, Mutant Marauder, which adds so, so much to the deck
Transit Mage Transit Mage is the meaty middle ground between Trinket Mage, Trophy Mage, and Treasure Mage
We have previously seen Fallout and Assassins Creed picked for Commander-based releases (both very strange choices in my view)
Or why not build around one of the many planes of existence in the world of Magic
for example, a shrine deck can exile everything but enchantments to retain its crucial cards
(Targeting opponents, anything they control, and/or cards in their graveyards is a crime.) Visitors to the town of Hardbristle found the locals to be quite prickly