Mary Read and Anne Bonny, Gilded Assault Cart, Xorn, and Songbird, Sonic Screamer

Prerequisites

• Mary Read and Anne Bonny on the battlefield
• Gilded Assault Cart in hand
• Xorn on the battlefield
• Songbird, Sonic Screamer on the battlefield

Steps

1. Activate Songbird by discarding Gilded Assault Cart
2. Mary Read and Anne Bonny triggers, creating two tapped Treasure tokens
3. Resolve the Songbird ability
4. Activate Gilded Assault Cart by sacrificing two Treasures, returning Gilded Assault Cart from your graveyard to your hand
5. Repeat

Results

• Infinite self-discard triggers