Text (LG+errata): 4/4, First Strike. ; Creatures with swampwalk can be blocked as though they didn't have swampwalk. [Oracle 2005/08/01]
Allows any creature controlled by any player to block Swampwalking creatures as if they did not have this ability. It is not limited to just Ur-Drago. [Aahz 1994/06/17]
Extended tournaments (see Rule 913) have always banned this card.
Note - This card was creature type "Legend" until Oracle 2004/10/01, when it became no type. Then with Oracle 2007/10/01 it became "Demon". Then with Oracle 2008/01/01 it became "Elemental".