Yu-Gi-Oh! GX Duel Academy Puzzle: 019

1. Activate Cathedral of the Nobles.

2. Summon Mystical Beast Serket by tributing Vorse Raider.

3. Activate Cathedral of the Nobles' effect, chain Call of the Haunted to bring Raider back, and Special Summon Blue-Eyes Ultimate Dragon.

4. Enter Battle Phase, attack St. Joan with BEUD and attack directly with Vorse Raider.