4 dots, but I wouldn't say that it is main selling point for mordred. atk/def down, blind and that heart one that makes them unable to act are more important for me and that's all in one skill! Also she have skill that make's landing debuff's easier and the one that add one more orb for enemies to fill in order to use their burst. Plus you can take that attack rate decrease debuff from previous soul and most of time you won't be hit more than once.