Reviewed October 4, 2026 · Remastered 5.x
Using mutations with Remastered skills
Build your normal skill allocation with the Remastered tree before choosing a mutation to support it. Old Euphoria builds can reference skills in different branches or with different effects; Synergy now belongs to General.
Plan ability points for both skill prerequisites and mutation research. The planner's normal skill allocation is not a complete mutation research budget, and an effect description is not a measured damage ranking.
Mutations vs. mutagens — the confusing part
These two systems sound alike but are different. Mutagens are red / green / blue items you slot into the character panel for flat bonuses to Attack Power, Sign Intensity or Vitality (and they boost more when grouped with skills of the same color). Mutations are a separate, deeper system added by the Blood and Wine expansion that unlocks powerful new passive effects and extra skill slots.
How to unlock mutations
Mutations require the Blood and Wine expansion. Complete “Turn and Face the Strange” in Toussaint to unlock the mutation menu in your character screen. Each mutation must be researched there.
- Mutagens — Research uses Greater red, green and/or blue mutagens. Check the required colors and quantities in the mutation menu.
- Ability points — Researching a mutation also spends ability points, so they compete with normal skills. A Potion of Clearance resets normal skills; use a Potion of Restoration to reset mutation research.
- One active at a time — You can research all of them, but only one mutation is active at once — swap freely outside combat.
The mutations and what they do
| Mutation | Effect |
|---|---|
| Euphoria | Every point of Toxicity raises your sword damage and Sign Intensity, up to a cap. |
| Piercing Cold | Aard gains a freeze chance that scales with available Adrenaline Points. Enemies frozen and knocked down simultaneously die immediately; those not frozen take additional damage. |
| Conductors of Magic | With a magic, unique or witcher sword drawn, Sign damage increases by a share of the sword's damage. |
| Toxic Blood | An enemy that injures you in melee receives damage based on the blow and your Toxicity. |
| Mutated Skin | Each Adrenaline Point reduces incoming damage, up to a cap — a defensive staple for survivable combat builds. |
| Bloodbath | Fatal sword blows dismember enemies or trigger a finisher. Melee hits build Attack Power until combat ends; taking damage other than Toxicity damage removes the bonus. |
| Second Life | When Vitality reaches 0, you briefly become invulnerable and regenerate health. The effect has a cooldown, rather than a once-per-fight limit. |
| Adrenaline Rush | At the start of combat, sword Attack Power and Sign Intensity increase with the number of foes after the first. When the bonus expires, a temporary penalty follows. |
| Cat Eyes | Greatly increases crossbow damage and critical hit chance, turning the crossbow into a genuine weapon. |
| Magic Sensibilities | Your Signs can land critical hits, with critical chance and damage scaling off your Sign Intensity. |
| Deadly Counter | Sword attacks deal more damage to monsters and humans immune to counterattacks. Against other enemies below the Vitality threshold, a counterattack triggers a finisher. |
| Metamorphosis | Applying a critical effect activates a random decoction for a time with no Toxicity cost, letting you stack more decoctions at once. |
Extra skill slots
Additional skill slots unlock after researching 2, 4, 8 and 12 mutations. The active mutation determines which skill colors those slots accept; researching a single mutation does not unlock a slot.
Frequently asked questions
- What's the difference between mutations and mutagens?
- Mutagens are color-coded items that give flat stat bonuses in the character panel. Mutations are a Blood and Wine system that unlocks powerful passive effects and extra skill slots, researched with mutagens and ability points.
- Do you need Blood and Wine for mutations?
- Yes. The mutation system is exclusive to the Blood and Wine expansion and unlocks at Professor Moreau's laboratory after you begin the expansion.
- What is the best mutation in Witcher 3?
- Euphoria supports Toxicity builds by raising sword and Sign damage. Piercing Cold and Conductors of Magic offer alternatives for Signs. Remastered changes the surrounding skill tree, so check the current planner before following an older build.
- Can you have more than one mutation active?
- You can research every mutation, but only one can be active at a time. You can switch the active mutation freely outside of combat.
Sources and scope
- CDPR: Remastered changes
- Game data: Remastered Steam build 25646871, English text and menu scripts. Reviewed October 4, 2026. Values can depend on your build, save and mods.