Urborg, Tomb of Yawgmoth + Kormus Bell + Viridian Longbow + Thornbite Staff

Urborg, Tomb of Yawgmoth
Kormus Bell
Viridian Longbow
Thornbite Staff

Requires
Urborg, Tomb of Yawgmoth must be on the battlefield. Kormus Bell must be on the battlefield. Viridian Longbow must be on the battlefield. Thornbite Staff must be on the battlefield. Viridian Longbow and Thornbite Staff attached to the same creature you control without summoning sickness.
Steps
  1. Whenever a land enters the battlefield, it enters as a 1/1 creature due to Urborg and Kormus Bell.
  2. Activate the creature with Viridian Longbow and Thornbite Staff attached by tapping it, dealing 1 damage to the land.
  3. The land dies as a state-based action due to having zero toughness.
  4. The creature triggers, untapping itself.
  5. Repeat as desired for each land an opponent controls, and whenever a land enters the battlefield under an opponent's control.
Results
Destroy all lands opponents control. Destroy any land that enters the battlefield under an opponent's control.

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