[REQUEST] A stupidly advanced battle system (With passive skills)

[Wingard Companion Cube]

I need a battle system, a very expanded version of the basic RMXP one.

Ex: Aquamancer casts Flood, people who can't breathe water take progressive damage, only those with a certain item equipped, or a passive skill called "Waterbreathe" are immune.

Shadowmancer casts Shroud, he gains 100 evaseiveness, but enemies with a certain effect can see through it.

Pyromancer casts Fire Burst (Not the name of the skill.), area is filled with flames, only those with fire resistance are immune.

Etc.

I can make a modified skill window for the passive skills, so don't worry aboot that.