Locking Alarm

Level 10Hazard
HazardUncommonMediumLegacy
AC
25
HP
70
Speed
0 ft.
Perception
+0
Fort
+24
Ref
+16
Will
+0
Stealth
+17
Recall Knowledge DC 29 (arcana)
Disable DC 32 thievery (expert) to bypass the magical triggers on the door, or Dispel Magic (5th rank, counteract DC 29) to counteract the alarm.

Any attempt to open the door without first tracing the symbol of Yhidothrus (an hourglass) on the door's face with a fingertip causes a glowing green ward to seal the door shut and raise an alarm.