Memory Hole
Level 9HazardHazardMediumLegacy
AC
0
HP
0
Speed
0 ft.
Perception
+0
Fort
+0
Ref
+0
Will
+0
Stealth
+20
Recall Knowledge DC 26 (arcana)
Disable DC 29 deception (master) to feed the pit false thoughts that plug it, or DC 28 occultism (expert) or Dispel Magic (4th rank; counteract DC 27) to drain the pit's magic
Anyone looking into the hole has memories sucked from their head.