Yavimaya, Cradle of Growth + Living Lands + Elesh Norn, Grand Cenobite
Destroy all lands opponents control, Destroy all lands that enter the battlefield under an opponent's control, Lock, Mass Land Denial
Yavimaya causes all lands to be Forests in addition to their other types, thus Living Lands causes all lands to be 1/1 creatures.
Because Elesh Norn gives all creatures your opponents control -2/-2, they die as a state-based action due to having less than zero toughness.
Whenever an opponent plays a land, it will also die as a state-based action.
Component Cards
How It Works
Yavimaya causes all lands to be Forests in addition to their other types, thus Living Lands causes all lands to be 1/1 creatures.
Because Elesh Norn gives all creatures your opponents control -2/-2, they die as a state-based action due to having less than zero toughness.
Whenever an opponent plays a land, it will also die as a state-based action.