Sage of Hours, Extruder, Myr Battlesphere, and Emry, Lurker of the Loch

Prerequisites

• Sage of Hours on the battlefield
• Extruder on the battlefield
• Myr Battlesphere in the graveyard
• Emry, Lurker of the Loch on the battlefield
• each turn available

Steps

1. Activate Emry by tapping it, targeting Myr Battlesphere
2. Cast Myr Battlesphere from your graveyard by paying
3. When Myr Battlesphere enters, it triggers, creating four 1/1 Myr artifact creature tokens
4. Activate Extruder five times by sacrificing Myr Battlesphere and the four Myr tokens, putting five +1/+1 counters on Sage of Hours
5. Activate Sage of Hours by removing all +1/+1 counters from it, causing you to take at least one extra turn after this one
6. Repeat each turn

Results

• Infinite turns
• Lock