Text (PT+errata): 4/4. ; When ~this~ enters the battlefield, sacrifice it unless you discard a creature card. [Oracle 2009/07/08]
Vintage tournaments (see Rule 911) banned this card until 2005/10/20 because it only appears in Portal.
Legacy tournaments (see Rule 912) banned this card until 2005/10/20 because it only appears in Portal.
Extended tournaments (see Rule 913) have always banned this card.
Standard (Type 2) tournaments (see Rule 914) have always banned this card.
Note - This card had no creature type until Oracle 2005/10/01, when it became "Mercenary Knight". Then with Oracle 2007/10/01 it became "Human Mercenary Knight".
