Teferi's Puzzling OmenTeferi's Puzzle Box Buy + Omen Machine Buy
Drop Puzzle Box, then Omen.
Omen Machine will prevent additional draws from Puzzle Box.
This'll leave you without a hand as well, but when paired with Teferi, Mage of Zhalfir Buy, which is a well established lock with Omen Machine, you'll break parity fairly well.
Future Sight or Experimental Frenzy (GRN, Rare) can also be used to break parity if desired.
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