Muramasa Skill?

I want to make Muramasa into a Sword Skill. I want it to be a strong attack against 1 enemy, that drains the users HP whenever it is used. Does anyone know how to do this?

What is Muramasa? Is it a weapon or a skill? I'm a little confused here.. 

you'll need to give us a better description of what "Muramasa" is.


Basically you can drain a skill user's HP by adding the commands into the damage formula box, but to tell you what to write there we'll need more info (including numbers how much to drain, and what should happen if the drain is larger than the remaining user's HP)

Pretty sure that "Muramasa" is a sword (katana) from final fantasy VII (7).

I'll use a.atk * 4 - b.def * 2 as a placement formula, you should replace this part with whatever formula you want for generating damage.

I believe you can do something like:

a.hp -= 500; a.atk * 4 -  b.def * 2

and replace the number 500 with the amount, or formula for the health drain.

disclaimer: I haven't messed with formula's in a long long time, so this has a possibility of being incorrect. Try it out though.

Edit: If you want a skill to COST hp, in other words, to use this skill you need 500 hp and it will take that 500hp away, you could use Yanfly's Skill Cost Manager script. Google it.

Actually Muramasa is a Katana in RPG Maker VX Ace. And in its description it says its "A demonic sword that sucks the life of the wielder." So I want to create a skill to use with it, so that when the actor wields the Muramasa Katana, it drains his HP whenever he/she uses it.

Item description in RPG Maker VX Ace sometimes is funny, and this one somewhat makes me laugh :D

@Dekita, yeah that was Cloud's second last or third last weapon I believe.

I suppose you could use a combination of Yanfly scripts for this. The Attack Replace script could use a skill skill called "attack", but is really a custom skill using the Skill Cost Manager which drains HP.