Ugin's Nexus, Tamiyo's Compleation, and Cogwork Assembler

Prerequisites

• Ugin's Nexus on the battlefield
• Tamiyo's Compleation on the battlefield
• Cogwork Assembler on the battlefield
• Tamiyo's Compleation attached to Ugin's Nexus
• each turn available

Steps

1. Activate Cogwork Assembler by paying , creating a token copy of Ugin's Nexus
2. The token copy of Ugin's Nexus is put into exile as a state based action due to the legend rule, causing you to take an extra turn after this one
3. Move to your next turn
4. Repeat

Results

• Infinite turns