In case anyone is confused on how to use the Yubel Montage Farm deck, here's how the last turn should go.
1. In hand: 2x Yubel, 1x Ultimate Nightmare, Shien's Spy, Gaia Power, Montage Dragon
2. On field: Terror Incarnate, Fire King Island
3. Summon Montage Dragon using 2x Yubel, 1x Ultimate Nightmare for 9600 ATK
4. Use Shien's Spy to send Montage to Jack's field
5. Use Gaia Power to 🔥 Terror Incarnate
6. Summon Ultimate Nightmare from GY
7. Attack into Montage for 10100 damage
Anonymous
Jack