Brock
Brock is a potion in The Witcher 2: Assassins of Kings that sharpens Geralt’s critical effects. It boosts Poison, Bleeding and Incineration to 115%, raises the chance of incinerating a foe with Igni and the critical effect chance of Aard by the same amount, and also changes Geralt’s resistance to Poisoning, Bleeding and Incineration.
One dose adds 50 Toxicity and lasts 600 seconds. It pairs well with blade oils and Sign builds that rely on those effects.
How to obtain
Sold by the arena merchant. It can also be brewed from 1 Vitriol, 1 Aether, 1 Quebrith and 1 Caelum with Formula: Brock, which is sold by Bartok, Felicia Cori (Chapters 2 and 3), Marcus and Myron.
Keep exploring
Plan a Remastered build: skill trees, mutagens, gear and a shareable build image.
Pick a potion, decoction or bomb and see every ingredient you need.
Answer the key choices and find out which Witcher 3 ending you will get.
Every location, quest and monster in the first region on one map.
The Wolf School's hidden valley: the keep, the Bastion, caves and treasure.
Tick off every school gear diagram and crafted piece, with diagram locations.
Search any monster and see the right oil, Signs and bombs.