Wrap in Flames | Magic: The Gathering
Formats Wrap in Flames is Legal in
Official Oracle Text for Wrap in Flames
—The War Diaries
Official Rulings for Wrap in Flames
6/15/2010 : The "can't block" effect applies to each of the targeted creatures -- and only those creatures -- even if Wrap in Flames deals no damage to one or more of them (due to a prevention effect, for example) or Wrap in Flames deals damage to a different creature (due to a redirection effect).
6/15/2010 : If any of the targeted creatures is an illegal target by the time Wrap in Flames resolves, it won't be dealt damage and will be able to block. The other targeted creatures will still be affected.