Desolation

{1}{B}{B} · Enchantment

At the beginning of each end step, each player who tapped a land for mana this turn sacrifices a land of their choice. This enchantment deals 2 damage to each player who sacrificed a Plains this way.

Motor: se resuelve a mano

Rulings (2)

Each Desolation only causes up to one land per turn to be sacrificed. If you have more than one, each will do this.
Wizards of the Coast · 2004-10-04
It works even if it was not on the battlefield when the land was tapped for mana.
Wizards of the Coast · 2004-10-04