These really only apply to the game. So they can come in handy if you want to know this kind of stuff!
These go in order of MP usage, not in order of how you get them. Sorry about that :\
Twin Stab
MP: 4
Proficiency: 100
Cross Slash
MP: 8
Proficiency: 100
Northern Cross
MP: 9
Proficiency: 200
Piercing Swords
MP: 12
Proficiency: 130
Hurricane Slash
MP: 16
Proficiency: 200
Leaf Slash
MP: 19
Proficiency: N/A
Dead Triangle
MP: 19
Proficiency: 200
Dragon Breath
MP: 28
Proficiency: 140
Sword Dance
MP: 32
Proficiency: 400
Tri-Ace
MP: 45
Proficiency: 400
Thats it for the killer moves!