While building a battle system, I stuck upon a choice between various versions and mechanics. Some have already overused dice base some hard to play and boring. So, I decide to use a little tricky system, then every unit has basic hits and can level them up only by items.

To avoid numbers hell - items have no digital parametres, only descriptions, such as:
“block” - item gives you the ability to block attacks
“armor” - increase your HP
“weapon” - gives you the ability to make different attacks.

Some items can combine this chars, creating various combos.
Although, there will be enemy weaknesses and resists for some kind of items; spell combinations or item cross combinations to make new weapon or armor.
So, a dull sword can be resharpened and poisoned dagger becomes rusty.