Rupture Spire is a bit annoying but certainly playable in Limited
A commander deck has to be exactly 100 cards, including your commander
If my opponent doesn't have a graveyard any more, where does their dead stuff go
With 23 total Gates and modern payoffs, they can form a surprisingly smooth mana base that quietly threatens with Mazes End without warping your deck
This human wizard can use reckless draw cards like Faithless Looting, Goblin Lore, or Careful Study to fill up your hand (well, technically your exile, but until the end of the turn it works as your hand) by doubling up all of their effects while avoiding the discard part
You'll want to seek the long game with Death Toll don't be too aggressive, set up your defenses, and show opponents the futility of messing with you by simply bringing dead cards back from your graveyard