[fixed/closed]Opal Avenger turns into Opal Champion

[Nexhro]

Describe the Bug:
Opal Avenger doesn't become a creature when its controller's opponent casts a creature spell.

Instead, it becomes Opal Champion (unanimated) or switches back to Opal Avenger when pretty much anything happens: I've seen it behave that way when a land was played, a land was tapped, a spell was cast, a turn began, or an attack was declared.

Which card did behave improperly ?
Opal Avenger

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
C14U, duel

What exactly should be the correct behavior/interaction ?
Opal Avenger becomes a creature when its controller's opponent casts a creature spell.

Are any other cards possibly affected by this bug ?
Opal Champion works fine.

[Gargaroz]

Fixed in 9cf879b