Phenax, God of Deception, Consuming Aberration, and Terisian Mindbreaker

Prerequisites

• Phenax, God of Deception on the battlefield
• Consuming Aberration on the battlefield
• Terisian Mindbreaker on the battlefield
• undefined

Steps

1. Declare Terisian Mindbreaker as an attacker, triggering it, causing the defending player to mill half their library, rounded up
2. Activate Consuming Aberration by tapping it, causing the opponent to mill cards equal to the cards in opponents' graveyards, milling the remainder of their library

Results

• Infinite mill for target opponent