Editing Mastery (section)

== The Mastery Pool ==

Every skill has its own '''Mastery Pool''', a shared reservoir that fills as a side stream and pays skill-wide bonuses:

* '''Filling''': a quarter (25%) of every mastery XP award also flows into that skill's pool — this is extra, nothing is taken away from the action's own progress.
* '''Capacity''': the pool's cap scales with how many actions the skill has, so skills with big rosters (like Expeditions) take far longer to fill than small ones (like Delving).
* '''Checkpoints''': the pool grants a bonus while it sits at or above each threshold:

{| class="wikitable sortable"
! Pool filled !! Skill-wide bonus (while at/above this level)
|-
| 10% || +10% mastery XP earned
|-
| 25% || −2% action time
|-
| 50% || +25% mastery XP earned
|-
| 95% || −3% action time
|}

* '''Spending''': you can spend pool XP to instantly buy the XP an action needs to reach its next mastery level. This is the system's central tension — spending can drain the pool '''below''' an active checkpoint, switching that bonus off until the pool refills. Hoard the checkpoints, or cash out to push a favorite action forward.