Flying Guillotine
Level 5Hazard (Complex)HazardMediumLegacy
AC
23
HP
52
Speed
0 ft.
Perception
+0
Fort
+9
Ref
+17
Will
+0
Stealth
+10
Recall Knowledge DC 20 (arcana)
Disable DC 20 thievery (trained) to erase the glyph (which requires a successful unarmed attack roll if the blade is already active) or Dispel Magic (3rd rank; counteract DC 20) to counteract it. The trap has a secret bypass known only to Ralso and Pratchett: as long as the guillotine can see a creature in the room touching thumb and pinky together with an empty hand, it remains dormant.
An invisible magical glyph on the guillotine's blade detects living creatures in the room, which causes the guillotine to fly off its hinges and attack.