Fleet Swallower + Phenax, God of Deception + Sewer Nemesis

UB identity

Commander legal

The 3 combo pieces

• Fleet Swallower
• Phenax, God of Deception
• Sewer Nemesis

How to execute it

1. Declare Fleet Swallower as an attacker, triggering it, causing the player named by Sewer Nemesis to mill half their library, rounded up.
2. Activate Sewer Nemesis by tapping it, causing the player to mill cards equal to the cards in their graveyard, milling the remainder of their library.

What the combo produces

• Infinite mill for target opponent
• Infinite self-mill