Cheapest priced copy (Urza's Saga): $2.99 at Card Kingdom, near mint, their price list as of .
Argothian Wurm 
Creature — Wurm · 6/6 · Rare · Urza's Saga · #236
Trample
When this creature enters, any player may sacrifice a land of their choice. If a player does, put this creature on top of its owner's library.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Urza's Saga | 236 | Rare | $2.99 | — |
One ruling from Wizards of the Coast
- 1 February 2007When Argothian Wurm enters, first the active player gets the option to sacrifice a land. If they decline, the next player in turn order gets the option. If a player elects to sacrifice a land, Argothian Wurm is put on top of its owner's library, but then all remaining players still get the option. If all players decline, then nothing happens and Argothian Wurm stays on the battlefield.