The Gitrog Monster, Dakmor Salvage, and Tunneler Wurm

Prerequisites

• The Gitrog Monster on the battlefield
• Dakmor Salvage in hand
• Tunneler Wurm on the battlefield

Steps

1. Activate Tunneler Wurm by discarding Dakmor Salvage
2. The Gitrog Monster's third ability triggers, causing you to mill two cards and return Dakmor Salvage from your graveyard to your hand
3. Resolve the Tunneler Wurm ability, regenerating it
4. Repeat

Results

• Infinite self-mill
• Near-infinite self-discard triggers