[Rendar]

Being able to change damage type on the fly makes it a powerful, powerful ability in and of itself. Not only this, but if memory serves right, the attack itself also increases your damage. Maybe not as much as checkmate, but it adds other benefits besides that.

Physical Damage gets messed up by BK, Wagata Oraji, Matador, MG, Boxer, etc etc.
Magical Damage gets messed up by VA, SpellThief, and a few other things.

This is an ability that, on a whim, you can seamlessly bob between the two and it doesn't lock you in, like the arcane potion does/should be doing. It, rightfully, should stay at 4m. The class is already one of the most used/most versatile in the entire game. Changing this ability to have a cooldown, just so it can have a 1m drop, makes the class less useful overall for it's job. If anything, I'd just like to see it not be able to double-tap in a single turn to smack it down a bit. (Not that it matters since Duelists shit out 180+ damage hits on people with 60 def anyways)