Cheapest priced copy (Visions): $2.29 at Card Kingdom, near mint, their price list as of .
Elkin Lair 
World Enchantment · Rare · Visions · #78
At the beginning of each player's upkeep, that player exiles a card at random from their hand. The player may play that card this turn. At the beginning of the next end step, if the player hasn't played the card, they put it into their graveyard.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $2.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Visions | 78 | Rare | $2.29 | — |
2 rulings from Wizards of the Coast
- 1 February 2006You can play the card this turn, not just during the resolution of the ability.
- 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.