name: Opal Champion
originalText: When one of your opponents successfully casts a creature spell, if Opal Champion is an enchantment, Opal Champion becomes a 3/3 creature with first strike that counts as a Knight.
printings: ULG
text: When an opponent casts a creature spell, if this permanent is an enchantment, it becomes a 3/3 Knight creature with first strike.
type: Enchantment