|This article is about the blacksmith. For the orphan in The Witcher 3: Wild Hunt, see Mikula (orphan).|
When Klucz came under attack by the renegade druid Fregenal and his personal army, Koshchey's Men, Mikula sent for help from the druids' circle at Mayena. Whilst waiting for the arrival of aid, he called upon his past military experience to rally a small army of peasants from the villages of Klucz, Kaczan and Porog.
Mikula was one of the few brave enough to accompany Visenna and Korin on their mission to slay Fregenal's Koshchey, and was ultimately the one to bring the sorcerer himself to an end by beheading him with his axe.