The Gitrog Monster, Dakmor Salvage, and Volrath's Dungeon

Prerequisites

• The Gitrog Monster on the battlefield
• Dakmor Salvage in hand
• Volrath's Dungeon on the battlefield

Steps

1. Activate Volrath's Dungeon's second ability 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 Volrath's Dungeon ability, causing target player to put a card from their hand on top of their library
4. Repeat

Results

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