Speaking of hard to get rid of: Graywaters Fixer lets your outlaws make a short but impactful comeback, granting each outlaw in your graveyard Encore
In his Magic card version, Prowl is a mono white Transformers Commander that grows bigger as more Creatures or Vehicles enter the Battlefield
You can tutor up Samwise Gamgee on turn three, then harmonize into Brightsteel Gearhulk on turn four, fetching both Viscera Seer and Cauldron Familiar to go infinite soon after
When you do, Minsc & Boo, Timeless Heroes deals X damage to any taget, where X is that creature's power
If you want to tell a story about why Skyclave Apparition was one of the best cards in Modern earlier this year and is now nowhere to be seen, tell the story of Ragavan, Nimble Pilferer
If you are already in the last room, you will complete that dungeon and start Undercity