Land's Edge

{1}{R}{R} · World Enchantment

Discard a card: If the discarded card was a land card, this enchantment deals 2 damage to target player or planeswalker. Any player may activate this ability.

Motor: se resuelve a mano

Rulings (2)

This has the supertype world. When a world permanent enters, any world permanents that were already on the battlefield are put into their owners' graveyards. This is a state-based action called the "world rule." The new world permanent stays on the battlefield. If two world permanents enter at the same time, they're both put into their owners' graveyards.
Wizards of the Coast · 2008-10-01
The damage done when you discard a land only applies to lands which are discarded by choice using the Land's Edge ability. It does not work on forced discards of any type.
Wizards of the Coast · 2004-10-04