Riverchurn Monument, and Singularity Rupture

Prerequisites

• Riverchurn Monument on the battlefield
• Singularity Rupture in hand
• available

Steps

1. Cast Singularity Rupture with kicker by paying , causing each opponent to mill half their library, rounded up
2. Activate Riverchurn Monument's exhaust ability by paying and tapping it, causing each opponent to mill the remainder of their library

Results

• Infinite mill
• Infinite self-mill