Erebos, God of the Dead is basically a card draw engine in this deck, using your lifegain to pay for cards that can close the game
Choose your exit: Decide on the spot whether to sell back, vault, or redeem
Its fairly typical to get offers of a percentage of the market value at these shows
Whenever an Assassin you control deals combat damage to an opponent, cloak the top card of that player's library
I expect this to show up everywhere in red decks, and thats before we even consider what warp adds to the card
If there are enough adjustable parameters in the object selection procedure, combinatorial explosion ensures that the universe of possible choices and of apparently simple constants can be large enough so that an automatic search of the possibilities allows construction of an object with desired backdoor properties