Another, equally valid, strategy is to recur Etali, Primal Conquerors powerful enter the battlefield ability to play a bunch of powerful free cards
Quintorius's Discard Strategy Before we can get into any of the things that the deck wants to do, we must talk about the Commander

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Sphinx of Forgotten Lore scales up Snapcaster to an attack trigger
However, this card can't claim the title for the best Cynthia card in Ultra Prism, as there's another that waits in the triple digits
And there's even a hidden Gyarados at the top of the card