I brewed Averna cascade a while ago, but a bunch of new cascade and cascade-like cards have been printed in the last few years. Unexpected Results and Tibalt's Trickery are two cards that you can hit at the end of a cascade chain and restart with a more expensive spell. Meanwhile, cards like Apex Devastator and Brilliant Ultimatum let you cast multiple spells and grow the stack further.
Notably, this deck can not play any non-cascade cards with mana value four or less, to guarantee that Unexpected Results or Tibalt's Trickery will always be hit. The one exception is a single Buried Alive (fetching Kozilek, Butcher of Truth or Ulamog, the Infinite Gyre) to shuffle those cards back into the deck.
Is this deck good? Probably not. Will your opponents ask you turn burn it after your an hour-long turn? Seems plausible.
Turbo Cascade
Approximate Total Cost:
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Also: I am legally required to point out what day this deck was posted on.