Kill the zombified Balaur and take their tissue samples to Zenzia.
Step 1. Collect the Contaminated Mutated TissueA tissue sample from a Rotting Combatant or a Rotting Mage. It has turned blue. and take it to ZenziaPippus’s subordinate. She investigates the contamination in Quarantine Area and finds Tarsinius to be too sanctimonious.. (You need to collect: Contaminated Tissue)