Phenax, God of Deception, Consuming Aberration, and Maddening Cacophony

Prerequisites

• Phenax, God of Deception on the battlefield
• Consuming Aberration on the battlefield
• Maddening Cacophony in hand
• undefined available

Steps

1. Cast Maddening Cacophony with kicker by paying , causing each opponent to mill half their library, rounded up
2. Activate Consuming Aberration by tapping it, causing a opponent to mill cards equal to the cards in opponents' graveyards, milling the remainder of their library

Results

• Infinite mill for target opponent
• Near-infinite mill