Debuff
Decrease C. DMG
Decreases the current value of the Champion's Critical Damage by 15% or 25%.
What the game's own status effects screen says
In the game data this effect appears as DecreaseCriticalDamage25p.
Champions that apply it
12 champions have a skill that applies Decrease C. DMG, according to the effect lines in the game data. This lists who applies it, not how reliably: chance, duration and resistance are on each champion's page.
Andryssia
Bovos Sharphorn
Ghrush the Mangler
Giath the Truthshield
Holguk of the Hallowsights
Ishiyama the Immovable
Jagg Bonesaw
Jingwon
Staltus Dragonbane
Ursuga Warcaller
Valkanen
Visionary
The description is the game's own text. It has not been tested in battle here, and the game's wording can be loose (for example about numbers that differ between versions of an effect). See Data quality for what has and has not been checked. Found a mistake? Use "Report a problem" at the bottom of the page.