Elda, Conjurer of Spectacle, and Leveler

Prerequisites

• Elda, Conjurer of Spectacle on the battlefield
• Leveler in hand
• available

Steps

1. Cast Leveler by paying
2. Leveler's demonstrate ability triggers, causing you to copy it and an opponent to also copy it
3. Resolve the opponent's copy of Leveler
4. When it enters, it triggers, exiling that opponent's library
5. Resolve both Levelers remaining
6. When they enter, they trigger, exiling your library

Results

• Exile target opponent's library
• Exile your library