Witchcraft · Skill

Forbidden Sigils

Increases Witchcraft Ability Slots number. See each level’s cost, its requirements and which levels the manual unlocks, then plan it in your build.

Tree
Witchcraft
Working phase
Day
Max level
Lv.3
Unlock
Manual progression
Forbidden Sigils skill icon

What Does Forbidden Sigils Do?

Increases Witchcraft Ability Slots number.

Forbidden Sigils Levels

Skill Point cost, Training Cost and unlock requirements per level
LevelSkill PointsTraining CostPlayer LevelTree SPManualPlan
Lv.12 Slots available.11Required for this levelPlan Lv.1 →
Lv.23 Slots available.11Lv.52Required for this levelPlan Lv.2 →
Lv.34 Slots available.21Lv.104Required for this levelPlan Lv.3 →

Costs are the per-level learning costs. Training Cost is the game’s skill-learning cost unit and is not converted into campaign days. Player Level and tree investment are checked against the values you enter in the planner.

Want to know whether your current build can reach Forbidden Sigils? Add your Player Level, unspent Skill Points and Mutation, and the planner shows exactly what is still missing.

Check in Skill Tree Planner →

How to Unlock Forbidden Sigils

  1. PREREQUISITE

    Learn Unnatural Resilience first. The planner can add the whole path for you.

  2. PLAYER LEVEL

    Lv.2 needs Player Level 5 · Lv.3 needs Player Level 10. Enter your Player Level in the planner to check it against your character.

  3. TREE INVESTMENT

    Lv.2 needs 2 Skill Points already spent in Witchcraft · Lv.3 needs 4 Skill Points already spent in Witchcraft. The target skill’s own cost does not count toward this requirement.

  4. SKILL MANUAL

    Forbidden Sigils Manual covers Lv.1–Lv.3. A manual only unlocks those levels: you still pay the Skill Points for each one.

Forbidden Sigils Manual

Forbidden Sigils Manual icon

Forbidden Sigils Manual

Covers Forbidden Sigils Lv.1–Lv.3. A manual only unlocks those levels: you still need the Skill Points, Player Level and tree investment listed above.

6 known sources: 5 merchants and 1 other acquisition source.

Where to get it →

Where Is Forbidden Sigils in the Skill Tree?

Is Forbidden Sigils Worth Taking?

Needs a prerequisite
You have to learn Unnatural Resilience first.
Opens a path
1 later skill sit behind it, so spending here also unlocks what comes next.
Manual-gated
Skill Points alone are not enough: levels above the free ones also need Forbidden Sigils Manual.

These are the gates and follow-ups the game data confirms, not a ranking. Which skill is worth it depends on the build you are already running.

Related Skills

Ordered by the real skill graph: prerequisites first, then what this skill unlocks, then the rest of the tree.

Open Forbidden Sigils in the Skill Tree Planner