Perks and Slots

Buy, then turn on
Each skill has nine purchasable perks. A perk shows its required level, price and effect. Buying unlocks it; turning it on uses an active slot. An inactive perk gives no bonus.

Current slots and swapping
A skill has one active slot at level 10, two at 50 and three at 80. Turn off one perk to make room for another. There is currently no waiting period between activations.

Mastery is separate
The level-99 mastery title is free. It is not a tenth perk to buy. Open Skill Rewards for the mastery tool upgrade, optional skill restart and journal rewards.

Turning off a purchased perk keeps it unlocked and does not refund its cost. After a skill restart, its perks still need their usual levels and slots.