Alzur's Thunder is an apparently very complicated magic spell which produces a bolt of lightning which can kill its target. Yennefer comments at one point that only someone with the superior diction and oratory skills of Alzur could even attempt it.
Damage a Unit by 7.
- See this subject on The Witcher wiki: Alzur's Thunder
- Gwent Update: Dec 19, 2016 Patch: Alzur's Thunder damage changed from 6 to 7.