Cheapest priced copy (Chronicles): $2.49 at Card Kingdom, near mint, their price list as of .
Land's Edge 
World Enchantment · Rare · Legends · #158
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.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $2.49 to $49.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Chronicles Foreign Black Border | 52 | Rare | — | — |
| Chronicles | 52 | Rare | $2.49 | — |
| Legends | 158 | Rare | $49.99 | — |
2 rulings from Wizards of the Coast
- 4 October 2004The 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.
- 1 October 2008This 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.