Phenax, God of Deception + Sewer Nemesis + Traumatize

Prerequisites

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Steps

1. 1Cast Traumatize by paying , causing the player named by Sewer Nemesis to mill half their library, rounded down.
2. 2Activate Sewer Nemesis by tapping it, causing the player to mill cards equal to the cards in their graveyard, likely milling the remainder of their library.

Effects

• Infinite mill for target opponent
• Infinite self-mill