Quote from Anachronity »
To begin with, colors are prevented from doing certain things for largely flavorful reasons, not balance reasons. Frankly, I don't agree on what the magic design team has decided is the best mechanical way to represent each color's concept. For example I think black should have a lot more interaction with artifacts, as the color that most craves power and wealth, among other changes. But ultimately it's all a question of how you express each color, and what things each color isn't allowed to do so that the other colors are more distinct by comparison.
Quote from silasary »The team at the time thought that if they were to print O-Kagachi, they'd need to do so before That Which Was Taken was taken. And O-Kagachi with his Divinity intact would indeed be too powerful.
When the Commander team returned to the character, they had a lot more freedom as to portrayal and timelines, and so chose to portray O-Kagachi after That Which Was Taken was taken.
Hence the 6/6.