User blog comment:Perchan/Fairy Tail Chapter 270: Into a Night of Falling Stars/@comment-3001427-20120215184939

Memory Make while powerful has a few weaknesses. One of which is inherent in powers like that, in this case the users over-reliance and trust in his perceptions regarding it. Turn that against him and he's pretty much toast. As for the other weakness, well it targets the memory, meaning it can only affect what is currently happening in the present or past. I'm assuming he can forge memories of himself using this ability, to create in essence illusions. Assuming that, it wouldnt affect you in real-time. Meaning that you'd have to "find" him again after he's used it. Essentially a defensive fighter has the advantage here as they "wait" and "counter" against his attacks, as opposed to "charge" and "attack" against him. Meaning he's more of a defensive caster and not an offensive one.