Cheapest priced copy (Legends): $999.99 at Card Kingdom, near mint, their price list as of .
The Abyss 
World Enchantment · Rare · Legends · #120
At the beginning of each player's upkeep, destroy target nonartifact creature that player controls of their choice. It can't be regenerated.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $999.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Legends | 120 | Rare | $999.99 | — |
2 rulings from Wizards of the Coast
- 4 October 2004The controller of The Abyss controls the ability, but the current player chooses what gets destroyed.
- 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.