Basic unlimited
Displaced Dinosaurs makes every artifact token you make (Treasure, Clues, and Food come to mind) into 7/7 creatures, and its not hard to make a ton of artifact tokens these days, whether Treasure in Golgari or Clues in Simic
To make the most out of March of Souls, don't look at it so much as a sweeper, but rather a form of mass creature-replacement
It was honestly pretty hard to narrow it down to just 10 cards, so wed love to hear your favorites over on Twitter
Your deck is much more likely to be clunky if the commander is not built to be a central or supportive aspect of the deck
Of course, this isnt, and could never be tournament legal, but its still a cool idea to see played out in the joke sets