Doubling Season + Tamiyo, the Moon Sage + Welding Jar

Doubling Season

Tamiyo, the Moon Sage

Welding Jar

How it works

1. Cast Tamiyo by paying 3. Tamiyo enters the battlefield with eight loyalty counters on it due to Doubling Season.
2. Activate Tamiyo's third loyalty ability by removing eight loyalty counters from it, causing you to get its emblem.
3. Cast Welding Jar by paying 0.
4. Activate Welding Jar by sacrificing it.
5. Tamiyo's emblem triggers, returning Welding Jar from your graveyard to your hand.
6. Repeat from step 3.