sindwulf: I've had the same problem before. It could be the graphics on your help screen but if you take closer notice, it's most likely out of your current level.
If I do remember that correctly, you generally pick this sword up before you can use it.
Ah! I didn't even notice the level requirement! Thank you! still a couple of levels away before I can use that combo. that said, some of the combos on this game are still a bit tough to pull off especially in combat, but I really do like how the combat system works, this game has pulled me away from my current titles the last few days.