Formula for attack that gets stronger for each dead party member?

[RCXGaming]

As the title says, I'm curious what a formula like this would look like.

The idea is that for each dead party member in battle_party (aka, nobody in reserve), this attack gets more powerful the more dead allies you have.

 

[DaRealSonGoku]

If you want to make something like that, you can use variables in the formula.
For Example,
Take some random variable. Let's say variable ID 12.
Set it to 1 as default.
Make a parallel common event that adds 1 to the variable whenever an ally dies and subtracts 1 when an ally is revived.
Variables are used like this in a formula: v[ID]. ID - index of the variable.
So you could have a skill that gets stronger the higher variable is.
Thus, the formula can be:

a.atk * v[12] * 2 - b.def * 3

Now, whenever one ally is dead, the attack doubles.
When two allies are dead, it triples.
When three allies are dead, it quadruples.
And so on.
Hope this helped you out.