Possibility Matrix

Possibility Matrix {3}

Artifact
At the beginning of your upkeep, exile the top card of each of your libraries.
Put X cards exiled with Possibility Matrix on the bottom of their owner's library: You may cast a nonland card exiled with Possibility Matrix with mana value X or less without paying its mana cost.
Details
Legalities
  • Possibility Matrix is legal in every format.
Rulings
  • 2018-09-03 You choose which card to cast as the ability resolves.
Printings
  • Carpe Arcanum (rare)

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