It's depends on what game mode you're using mods on. I usually only em on Timeworn, Dutchman & Infinite Abyss as well as Threads of Fate the story mode.
Since the mod affects enemies as well in the Blood Arena. And the Tomb, it will never let you hit higher damage when your Blood Power isn't high enough.
But whenever you use it, it can always come out with a "battle results verification error" (by chance). Such as, hard mode in the story mode, Abyss towers & Tomb, where you'll get a 100% error if using mods.
And that's when you know your Blood Power isn't high enough to win the battle, be patient, go grind more and level up ur heroes.