Greater Blue Mutagen is a common Mutagen in The Witcher 3: Wild Hunt.
It can be used in your character window to increase your sign intensity, and can be boosted by slotting blue abilities into the section. It's a common item which is dropped by the majority of monsters in the game.
- Required Craftman Level: ??
- Item Tier: Common Item
- Effect: +10% Sign Intensity
- Obtained: Dropped by Cockatrice, chort, foglet, forktail, earth elemental, ekhidna, ancient leshen, basilisk, leshen
- Deconstruct for: ??
- Associated Quest ??