Doubling Season, Tamiyo, the Moon Sage, and Welding Jar

Prerequisites

• Doubling Season on the battlefield
• Tamiyo, the Moon Sage in hand
• Welding Jar on the battlefield
• There is at least one additional artifact on the battlefield
• available

Steps

1. Cast Tamiyo by paying
2. Tamiyo enters the battlefield with eight loyalty counters on it due to Doubling Season
3. Activate Tamiyo's third loyalty ability by removing eight loyalty counters from it, causing you to get its emblem
4. Cast Welding Jar by paying
5. Activate Welding Jar by sacrificing it
6. Tamiyo's emblem triggers, returning Welding Jar from your graveyard to your hand
7. Repeat from step 3

Results

• Infinite storm count