Roar of the Crowd | Magic: The Gathering
Formats Roar of the Crowd is Legal in
Official Oracle Text for Roar of the Crowd
Official Rulings for Roar of the Crowd
4/1/2008 : You choose a target for this spell as you cast it, but you don't choose a creature type until the spell resolves.
4/1/2008 : Spells and abilities that prevent damage or regenerate the targeted creature must be cast or activated before the creature type is chosen.