Color Identity: B

Initial Card State
- All permanents on the battlefield.
Steps
- When a land enters the battlefield, it becomes a Swamp due to Kormus Bell. This then causes it to become a 0/0 creature due to Urborg and Night of Souls' Betrayal, and die as a state-based action due to having 0 toughness.
Results
- Destroy all lands.
- Destroy all lands that enter the battlefield.
- Mass Land Denial.
Bracket Tag
This combo has been estimated to be Ruthless (Bracket 4+).