Scripts

There's no need to disable the standard bonus; the check for artifacts is very easy. The second part does seem quite complex, do you want to suggest that it's best to forget about it for now?

I'm not sure why such powerful debuffs are needed, to the point where even disabling the standard debuff isn't necessary, but Hottabych had a guide on combat scripts with examples. In any case, I forgot to mention that it's impossible to set a specific duration and strength for these spells – everything will depend on the parameters of the hero from whose perspective the scripted spell will be cast.