Mill didn’t work correctly
Playing a mill deck when I noticed cards like ruin crab or maddening cacophony were milling one card less than they should (ex: ruin crab should mill my opponent for 3 but would only actually mill 2). I lost a round with Bruvac the grandiloquent (doubles mill) on the field, casting maddening cacophony (mills 8), and my opponent had 16 cards in his library but it only milled 15.
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