Faulty Tidal Controls

Level 1Hazard (Complex)
HazardRareMediumLegacy
AC
19
HP
23
Speed
0 ft.
Perception
+0
Fort
+11
Ref
+4
Will
+0
Stealth
+10
Recall Knowledge DC 20 (arcana)
Disable DC 17 nature (trained) to neutralize the tidal magic, or DC 17 survival to predict the changing tides, or DC 20 thievery (trained) to scratch away the sigils; two total successes are required to disable the trap.

Sigils carved into the turquoise sphere atop the altar illuminate. Moments later, a rush of water flows into the hallway.