The first expansion for Magic: The Gathering – Duels of the Planeswalkers went live on Xbox Live Arcade today. Priced at 400 Microsoft Points, the new expansion has new decks, new challenges and new bad guys.

If you think you have the skils, team members from Stainless Games, Wizards of the Coast and Microsoft will be on Xbox Live on Saturday, October 24 from 6-9pm EST. It’s a chance to get the Spellslinger Achievement if you beat one of them!

If you really want to test those Magic card skills, Game with Fame is Saturday, November 14 from 6-9pm EST on Xbox Live. Gamers can play against Richard Garfield and other Magic celebrities.