Ashaya, Soul of the Wild + Blossoming Tortoise + Karn, Silver Golem + 1 more
Destroy all lands opponents control, Destroy all lands that enter the battlefield under an opponent's control, Lock, Mass Land Denial
Acitvate Karn by paying due to Blossoming Tortoise, causing a land an opponent controls to become a 0/0 artifact creature.
The land dies as a state-based action due to having 0 toughness.
Repeat.
You may also repeat this loop whenever a land enters the battlefield under an opponent's control, and you may repeat this for any permanents opponents control with mana value equal to zero.
Component Cards
How It Works
Acitvate Karn by paying due to Blossoming Tortoise, causing a land an opponent controls to become a 0/0 artifact creature.
The land dies as a state-based action due to having 0 toughness.
Repeat.
You may also repeat this loop whenever a land enters the battlefield under an opponent's control, and you may repeat this for any permanents opponents control with mana value equal to zero.