983650f0__attributes___The_Witcher_Wiki__Ability_name
[Effect] Critical effect chance: incineration +20%. (It adds 20% of your actual incineration percentage, i.e. if you are wielding a sword with 2 fire runes which give you a 20% chance of incineration, with this ability you will make that 24% in total) [Means of acquisition] Receive a certain amount of damage by being set on fire. Set Geralt ablaze by walking into a campfire and repeat approximately 5 times. You can earn this Ability at any time in the game. One of the best ways is in Foltest's camp during the Prologue. There is a Circle of Power which grants +2 Vitality regeneration and near it is a camp fire. Use the Circle of Power, set yourself ablaze and regenerate very fast. Repeat. [Chapter begun] 0 [Ability name] 
Pyromaniac
Character attributes - The Witcher Wiki
Ability name