Thrasios, Triton Hero is the cornerstone of this approach, allowing players the ability to win on the spot if they have infinite mana and a Thassas Oracle
Next turn you cast Ad Nauseam, draw most of your deck including Reliquary Tower, which you play to keep all the cards
Under the "old" rules, you did not die until the end of the current phase (regardless of your life total), so you could Contract all day long even at zero life and simply cast a game-ending Drain Life to decimate your opponent
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Theres one more consideration when it comes to You Find a Cursed Idol, and venture cards in general: the inherent modality provided by dungeons
Because of this, the deck has an identity crisis that I can only imagine would be confusing to a beginner