[Solved] How to extract original icons of items

[coconut]

I need to extract some icons for editing, but I don't know how, I didn't find any .mpq files, Im playing wc3 reforged. Or somewhere there is a library with all icons?

 

[Ravager16829]

If you are using Warcraft 3 Reforged, then you can't find all MPQ files because Reforged uses the CASC format.
All you need to do is use the Ladik's CascViewer. For the case of icons, take a look for the "ReplaceableTextures" folder.
There should be a two important folders called "CommandButtons" and "CommandButtonsDisabled". Each folder contains all files, with each had "BTN" and "DISBTN" prefixes.
For passive abilities, it should be "PASBTN" and "DISPASBTN".