The Taint

Whenever a land enters the battlefield that an opponent controls, that opponent loses 2 life and
you gain 2 life.
"The taint placed on saidin instantly drove all
members of the Hundred Companions mad, and
doomed all other present and future male channelers to
insanity and slow death. All the ancient male Aes
Sedai eventually went mad and tore the world apart, causing the Breaking and ending the Age of Legends."