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

Urborg, Tomb of Yawgmoth

Kormus Bell

Viridian Longbow

Thornbite Staff

How it works

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.