Mods and cheat engine

[EaMett]

Reshade is neither a grey area nor a mod (its a post-processing injector). Its officially allowed to use it (from 2013):

There have been updates to prohibited activities since 2013 and reshaders now technically fall under that umbrella. Of course, they would never ban anyone for it. Never have and most likely never will.
I brought it up because it is technically part of the ToS now AND you could technically use reshade to get better visibility of AOE telegraphs on certain arenas (p3 for example). So it seemed relevant.

- Modifying, analyzing, integrating, and/or reverse-engineering game software or data.
- Creating, distributing, using, or promoting utilities that interact with the game.