Scaretiller, Voltaic Construct, Crystal Vein, Tiller Engine, and Viridian Longbow

Prerequisites

• Scaretiller on the battlefield
• Voltaic Construct on the battlefield
• Crystal Vein on the battlefield
• Tiller Engine on the battlefield
• Viridian Longbow on the battlefield
• Viridian Longbow attached to Scaretiller
• Scaretiller does not have summoning sickness

Steps

1. Activate Crystal Vein's second ability by tapping and sacrificing it, adding
2. Activate Scaretiller by tapping it
3. Scaretiller triggers, returning Crystal Vein from your graveyard to the battlefield tapped
4. Crystal Vein enters the battlefield tapped, triggering Tiller Engine, untapping Crystal Vein
5. Resolve the Scaretiller ability from step 2, dealing 1 damage to any target
6. Activate Voltaic Construct by paying , untapping Scaretiller
7. Repeat

Results

• Infinite damage
• Infinite landfall triggers