no its the one when she makes a huge yellow sword appear in front of her with a gap
edit : in the Mu sprite 7z file from the sprite ressource thread I think its the mu212_xx.png files for that move
still practicing , as much as I'll never reach tourney level because of online play , I wanna reach at least the point where I dont drop majority of my combos , my knowledge of blockstrings is also horrible and I have predictable/bad bursts