Text (PT+errata): Search your library for a creature card and reveal that card. Shuffle your library, then put the card on top of it. [Oracle 2009/07/08]
You do not have to find a creature card if you do not want to. See Rule 701.14. [D'Angelo 2001/07/14]
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.
