Cheapest priced copy (Legends): $64.99 at Card Kingdom, near mint, their price list as of .
Storm World 
World Enchantment · Rare · Legends · #165
At the beginning of each player's upkeep, this enchantment deals X damage to that player, where X is 4 minus the number of cards in their hand.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $64.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Legends | 165 | Rare | $64.99 | — |
2 rulings from Wizards of the Coast
- 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.
- 1 October 2009If the player whose turn it is has four or more cards in their hand as Storm World's ability resolves, the ability just won't do anything that turn.