Bruvac the Grandiloquent, and Singularity Rupture

Prerequisites

• Bruvac the Grandiloquent on the battlefield
• Singularity Rupture in hand
• available

Steps

1. Cast Singularity Rupture by paying its mana cost, destroying all creatures and causing any number of opponents to mill a number of cards equal to half their library, rounded down, times two due to Bruvac
2. You can also have yourself mill half your library, if desired

Results

• Infinite mill
• Near-infinite self-mill