Invisible-Intruder Alarm — Optional Keep Template
Invisible-Intruder Alarm — Optional Keep Template
Original Basic D&D — B2
B2 suggests magical wards that shout an alarm when invisible creatures approach key areas of the Keep.
Location: Unplaced key areas of the Keep; the source offers this as an optional GM addition.
Trigger: An invisible creature passes within about 10 feet of a ward.
Checks, rolls and results
| When | Roll / condition | Result |
|---|---|---|
| An invisible creature passes within about 10 feet | Automatic; no roll supplied | The ward shouts “ALARM”. |
Running the trap
- This uncounted Reference template does not assert that any particular area already has such a ward.
Not specified in the source
- Exact placements, number of wards, duration, detection and disabling are not given.
Source passage
(You can have magical traps placed in key areas to shout “ALARM” whenever an invisible creature passes within 10' or so!)
Source: Act I — The Keep on the Borderlands. Original narrative retained. Low-face d6/d100 results in this table are a notation for the stated chances, not new detection or save rules.