Several changes.

Then what are these files located at this address? data.pak\GameMechanics\Spell\Creature_Abilities\Ne cropolis 
And is DefaultStats a line in a document or the document itself? If so, where can I find it? 

in \GameMechanics\Spell\ there are standard files with paths to icons, descriptions, names, and visual effects, as well as the cost in mana and resources, and sometimes damage

\GameMechanics\RPGStats\DefaultStats.xdb  line 295 <ZombieWeakeningStrike>2</ZombieWeakeningStrike> here the strength is changed