The Duel Portal is the unofficial spinoff of the LCCG Duel Arena, which has been abandoned. It is a website in Silverlight 4 by Seattleite for all YCM members, and not just LCCG members. One purpose is to hopefully get people in YCM interested in Card Creation, another is to help LCCG members test cards.
Despite allowing quick addition of cards, the Duel Portal is not the official program of LCCG, due to currently the existance of non-LCCG members in the playerbase. The official dueling client is still YVD.
All OriCa cards allowed to be played as well, you can find more OriCa's and add yours here