If you attended the Legions prerelease tournament on the weekend of January 25, then you should have a prerelease card in your possession. If not, here's what you missed out on:
The card is Feral Throwback, a rare green creature, and the only card in the set with both amplify and provoke. The card is a special kind of foil, with the focus of the art "cut out" of the foil background. The Legions expansion symbol is foiled in the text box, and the date (25 Jan 03) is stamped on the type line in gold leaf.