SP

Special Points (SP for short) is a statistic of weapons. Any weapon that requires SP is known as a magical weapon. SP are needed to use the Special attack of such moves. The MAG stat on Weapons and on Characters refer to the amount of SP point gained per attack. For weapons, the SP gain only applies when a move is done with that weapon, and the SP gain is only applied to that weapon as well. For the character, besides the other affects that could also apply when adding EP to MAG, this is the amount of MAG added to every weapon when any attack is performed.

Mechanics
When a character attacks using a Weapon that requires SP and has at least 1 MAG, a blue bar (known as the SP bar) will charge up below the Weapon. For each started attack performed (not necessarily landed), the bar will increase by a fraction equivalent to the character's MAG divided by the SP of the weapon.

When the SP bar is full, the character will execute the Special attack when that attack is performed next, automatically. The SP bar will reset to 0. Any excess SP present after filling the bar will not be used up. From this we can construct tables that indicates the number of attacks required to produce a Special attack, as can be seen in the following section. If the character keeps performing the attacks with the weapon that are not the move with special abilities then those points will be stored. any stored point will be there until the end of the match or the end of the stage. (SP can not be held through stages) however, SP in your SP bar will be there indefinitely. There is not cap for this SP bank. The SP usage for one weapon does not effect the SP usage of another weapon, so in theory you an bank the SP of one move while using the SP of another weapon's moves. However, the SP is attached to the weapon not the move, so once the SP bar is used for one move for the weapon, another move cannot use it's special move unless there is enough SP banked in the weapon to use that move.

It should be noted that the SP bar resets when the weapon is modified (i.e. if a combo item is added to a weapon, or if the weapon is removed from the character).

Note: One strategy is to use fast safe moves to build up lots of meter before performing very heavy SP based attacks on your opponents, however because you opponent can do the same thing while you are charging, you have to make sure they can not charge while you are charging. So using things like needles or rings would allow you to do that.