Korvold, Fae-Cursed King, Surly Badgersaur, Dakmor Salvage, and Putrid Imp

Prerequisites

• Korvold, Fae-Cursed King on the battlefield
• Surly Badgersaur on the battlefield
• Dakmor Salvage in hand
• Putrid Imp on the battlefield

Steps

1. Activate Putrid Imp by discarding Dakmor Salvage
2. Surly Badgersaur's second ability triggers, creating a Treasure token
3. Resolve the Putrid Imp ability, giving it flying until end of turn
4. Activate the Treasure token by tapping and sacrificing it, adding one mana of any color
5. Korvold's second ability triggers, putting a +1/+1 counter on it and causing you to mill two cards and return Dakmor Salvage from your graveyard to your hand
6. Repeat

Results

• Infinite self-mill
• Near-infinite +1/+1 counters on Korvold
• Near-infinite colored mana
• Near-infinite self-discard triggers