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If your deck does not have a large number of cards, you can indirectly manipulate the top of the deck by manipulating the bottom of the deck with effects such as Skull Dead - Skull Dead

The real kicker is Garlands ability to return from the graveyard transformed into Chaos, the Endlessa 5/5 demon with flying, ready to keep applying pressure to your opponents

Cannoweissmon slots a source from hand underneath itself

Where to buy Beta cards

Arbaaz Mir provides the deck with a little reach

While the banned list in Modern is long compared to that of most formats, it's not that long, and the number of cards that could potentially be unbanned and would also be expensive and hyped enough to sell a Masters set is very small (it actually might just be Jace, the Mind Sculptor)