Adagia, Windswept Bastion, Ugin's Nexus, and Meticulous Excavation

Prerequisites

• Adagia, Windswept Bastion on the battlefield
• Ugin's Nexus in hand
• Meticulous Excavation on the battlefield
• each turn available

Steps

1. Cast Ugin's Nexus by paying
2. Activate Adagia by paying and tapping it, creating a token copy of Ugin's Nexus
3. Put the Ugin's Nexus token into exile due to the legend rule and its replacement effect, causing you to take an extra turn after this one
4. Activate Meticulous Excavation by paying , returning Ugin's Nexus from the battlefield to your hand
5. Repeat each turn

Results

• Infinite turns