Text (CH+errata): 1/1. ; {5}: At the beginning of your next upkeep, choose a basic land type. ~this~ gains landwalk of the chosen type until the end of that turn. [Oracle 2005/08/01]
When the ability resolves, it creates another ability that triggers at the beginning of your next upkeep. When that ability resolves, you choose a land type. [D'Angelo 2000/03/03]
If the Slug changes controllers after the mana is spent, the player who activates this ability selects a landwalk during their next upkeep even if they don't control it at the time. [Aahz 1996/06/13]
Extended tournaments (see Rule 913) have banned this card since 1999/10/01.
