HANDLING POWER PERCEPTION AND SENSE REALITY WARP

Tom Tweedle and Don Fuller, Copyright © 1998

Edited by Lowell Matthews for The Guild Companion

 

Power Perception is the ability to sense both active and passive magic. This includes magic from all of the Realms, but this skill is incapable of detecting psionics, which requires Spacemaster Psionic Perception.

Sense Reality Warp or Reality Awareness is the ability to sense disturbances in reality. A disturbance is any case where reality is folded or distorted, usually from the effects of transportation spells. Reality awareness can detect Teleports, Gate spells, physical Gates (in use or not), Time Displacement spells, rifts in the continuum, etc. Reality Awareness does not detect "magic" per se, only the effects of certain magics.

  1. Procedure
    1. Find the Power Points discharged in the spell. Index to get the PP Rating P. For multiple spells cast together or simultaneously, take the highest level spell as a base and add the square root of every other spell to it for an effective Power Point total used to determine P.
    2. Consult the Spell Type Modifier chart to get the Modifier Rating M.
    3. Determine the distance from the spell cast. Index to get the Distance Rating D.
    4. Calculate the Total Rating T = P + M – D. Consult the Total Rating Chart to get the modification to the Power Perception skill roll, then compare the results to the Power Awareness chart for the outcome (RM2 or RMSS).
    5. Other modifiers to the Power Perception skill roll:
      1. Not actively sensing: –50.
      2. Marginally sensing: –25 (assume to be concentrating, –20 to actions).
      3. Actively Sensing: Treat as an action.
  2. Power Awareness Examples
    1. ESFran the mage fires off a Bladeturn II (14th level). Another mage is watching the group from 200' away. The P for 14 PP’s is 3. The D for 200' is 4. There are no special modifiers, so T = 3 – 4 = –1 on the chart, resulting in a –25 to the observing mage's Power Perception roll.
    2. ESFran cooks off his best PEM Elemental Ball (level 25) at a band of Orcs. Another mage is sniffing the flows of Essence for fun. Will he notice? The P is 3, but Elemental adds +1 and PEM adds +1, making P + M = 5. The other mage is 1500' away, making D = 7. T = 5 – 7 = –2, resulting in –50 to the sniffing mage's Power Perception roll.
    3. Darwing is having a bad day fighting a few Vlathacna Elder Worms. He dumps out 1500 PP's of raw Essence to obliterate them! How far away can this be perceived? The 1500 PP's yields P = 18. In addition, Darwing is an Arcane user, +1, and the blast was "loud," +1, making P + M = 20! Therefore, any concentrating mage within 900 miles would have no penalty to perceive the blast, and even if they were not trying, they would only be at –50 to be made aware of it. Any mage within 10 miles would be instantly aware of it, even if they were sleeping! Reason: T = 20 – 11 (D for 10 miles) = +8, or +200 to the Power Perception skill roll!
  3. Reality Awareness Examples
    1. ESFran is stalking one of the ever-elusive Blink Bunnies, dangerous death rabbits that can make short-distance Teleports. He is actively using Reality Awareness to detect a trace of the bunny's Teleport. The bunny "zworps" in, right behind him, silent as death. Is ESFran out of luck? P = 2, M = –1 for Teleport, D = 1; therefore, T = 0 and ESFran's roll is unmodified.
    2. The Mages' Guild is having tea in their tower while unbeknownst to them a group of kids are coming through the fixed gate embedded in one of their newly acquired wardrobe closets.... Do they notice? P = 4, M = 2 (fixed gate, open) + 1 (different plane on prime) = 3, D = 4; therefore, T = 4 + 3 – 4 = +3, so they all get +75 – 50 (not actively sensing) = +25 to their skill rolls.
    3. ESFran is drinking a piña colada and relaxing on the beach catching a tan. Twenty miles offshore, a rift tears open during a localized elemental storm. Is ESFran's vacation ruined? The GM decides that P = 10, the rift is small (15 ft2), +2, and it connects to an elemental plane, +3. D = 12, so T = 10 + 5 – 12 = +3, so ESFran would be at +75 if he were actively sensing, but still is at +25 for just laying there cooling it. He quickly sits up in a panic....

 

 

Power Perception and Reality Awareness Tables

Power Points*

P

Range

D

T Value

Skill Mod

1–5

1

Target

0

Each +1

+25

 6–10

2

1–10 feet

1

4

+100

11–20

3

11–50 feet

2

3

+75

21–50

4

50–100 feet

3

2

+50

 51–100

5

100–200 feet

4

1

+25

101–200

6

200–500 feet

5

0

0

Extra 100's

+1

500–1000 feet

6

–1

–25

   

1000–2000 feet

7

–2

–50

   

2000 feet–1 mile

8

–3

–100

   

1–2 miles

9

–4

–200

   

2–5 miles

10

Each –1

–50

   

5–10 miles

11

   
   

10–100 miles

12

   
   

Extra 100's

+1

   


Spell Modifiers

M

Gate Modifiers

M

Gate Destination

M

Arcane

+1

Teleport Spell

–1

Different Material Plane

+1

Elemental

+1

Gate Spell

0

Elemental Plane

+3

PEM-laced

+1

Arcane

+1

Ethereal Plane

+2

Extraplanar

+1

Fixed Gate, Dormant

–3

Different Sphere

+5

"Loud"

+1

Fixed Gate, Closed

–1

Time Travel Involved

+2

Waiting/Delayed

–1

Fixed Gate, Open

+2

Planar Rift (100 ft2)

+1

Operating Only

–2

 

 

Continuum Rift (100 ft2)

+2

Informational

–1

 

 

 

 

Subtle or Weak

–1

 

 

 

 

Note 1: Fixed Gates use the PP value of the highest Gate spell cast in their making. Rifts can easily range from 100 to 1000's of PP's, GM discretion.

Note 2: "Different Sphere" refers to the AD&D SpellJammer Universe.