When 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.
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Not Legal
Timeless
Not Legal
Gladiator
Not Legal
Pioneer
Not Legal
Modern
Not Legal
Legacy
Legal
Pauper
Not Legal
Vintage
Legal
Penny
Not Legal
Commander
Legal
Oathbreaker
Legal
Standardbrawl
Not Legal
Brawl
Not Legal
Alchemy
Not Legal
Paupercommander
Not Legal
Duel
Legal
Oldschool
Not Legal
Premodern
Legal
Predh
Legal
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