Debuff

Petrification

A Champion under a Petrification debuff will have all of their buffs removed, and be unable to take their next turn.
When under a Petrification debuff, a Champion will be unable to receive buffs, and is susceptible to receiving more debuffs. Instant effects, Positive and Negative, do not work on Champions under a Petrification debuff, except for the Remove Debuff effect.
Finally, while under a Petrification debuff, a Champion will only receive 40% of any incoming damage. However, incoming damage from Bomb debuffs is increased by 300%.
What the game's own status effects screen says

In the game data this effect appears as Petrification.

Champions that apply it

7 champions have a skill that applies Petrification, 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.

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.