Oath of Druids, and Jace, Wielder of Mysteries

Prerequisites

• Oath of Druids on the battlefield
• Jace, Wielder of Mysteries on the battlefield
• An opponent has more creatures than you
• No creature cards in library

Steps

1. At the beginning of your upkeep, Oath of Druids triggers, causing you to mill your entire library since it contains no creature cards
2. In your draw step, Jace's ability causes you to win the game instead of drawing from an empty library

Results

• Infinitely self-mill
• Win the game