
Originally Posted by
Wishing Star
Although it doesn't apply as much here, brokenness of an ability is determined by the ability first, then the combination of the ability and the Pokémon that get it.
Magic Bounce and Magic Guard effectively deflect and block indirect damage, which is often used by walls that typically don't deal much damage anyway. As it is now, Reflex pretty much shuts down Pokémon that rely on using priority moves to nab KO's.
I'll agree with you that the question of brokenness isn't quite on the fence yet, but the priority move-hate of this ability could be toned down slightly.