House Rules · GURPS 4e

Magical Null

Four levels (I–IV) — Ivan is Grounding Null (II); shut-off vs burn-out (3d); Null bleed; touch, bubbles, astral, garden.

Magical Null — house rules

Game: Orion Corridor — 2277 · Setting: Khesret system · Rules: GURPS 4e

Companion: Khesret Magic System · Enchantment Gadgeteer · Life-Cells


Summary

Magical Null is a bundled house trait (see GURPS Magic Resistance + Mana Damper). Nulls never cast. Higher levels suppress magic by touch and dead-mana bubbles.

Pick one level (includes all lower):

LevelNameEffect
IInsulatedMagic does not affect you
IIGroundingTouch suppresses active magic
IIIWither3-foot radius no mana (always on)
IVAnchor3-yard radius no mana (always on)

House point guide: 20 / 35 / 55 / 80 — or equivalent custom build.

Incompatible: Magery, spells, Power Investiture (same character).

Ivan (canon PC): Grounding Null (II) — touch suppresses magic; no dead-mana bubble. ~3 m plant fade near his bunk = Null bleed (sleep adjacency), not Level III–IV.

Rarity (setting): Most people have never heard of Nulls. Background human rate < 0.0001%. Nearly all known Nulls descend from the sealed Harrowdeep Claim in Torchless Reach (TR-4419) — an ungated dead lane (no Concord jump, no CHC route). GM cards: Torchless Reach · Harrowdeep Claim.


Level I — Insulated

  • Targeted magic: caster −10 or resist +10 (GM picks one, stay consistent).
  • Area magic: caster −4 to affect you.
  • Beneficial magic requires touch + consent.
  • Assensing: blank / static / void.

Level II — Grounding

TouchQuick Contest null Will+10 vs spell/item skill:

TargetResult
Active spell on personEnds if null wins
Active magic itemDormant 1d×10 min
Life-Cell−1d MP; dormant 1 hr
Ritual / Q&D in progressDisrupted
Mage StrainClear Strain (1 FP to null, 1×/scene)

Turn off vs. burn out

IntentBurn 3d?
Shut off (default touch)Fast-Bound only
Ground hard (burn it out)Always

3d total — after item is off / dormant:

3dFast-BoundProper enchant
3–10Returns when dormant endsReturns when dormant ends
11–14Burned out (mundane)Fractured — repair needed
15–17Burned outFractured + 24 h offline
18+Burned out (+ 1 FP to null if deliberate)Burned out

Life-Cells: −1d MP only — stone survives. One-shots: charge spent, no 3d.

Null bleed (Level II only)

Long-term presence (especially sleep within ~3 m of plants) stresses life-mana — not a no-mana zone. Mages can cast nearby until the null touches something.

  • Greenhouse d100 +5 if null bunks adjacent to dome that week.
  • Ivan (Verdigris): corridor stays plant-free from bleed, not Wither/Anchor.

Levels III & IV — Dead mana bubble (not Ivan II)

IIIIV
Radius3 ft3 yd
Local manaNoneNone
EdgeMaintained spells −4 or drop−6 or drop
  • No casting or recharge inside.
  • Plants suffer inside III–IV bubble — don’t sleep in the mana-garden.
  • Null bleed (II only): adjacent bunk +5 on greenhouse d100 — Ivan, not a bubble.
  • IV replaces III radius (not stacked).

Magic items

In bubbleTouched
Dormant itemWon’t activate
Active itemOff insideDormant — Burn-Out Roll if Fast-Bound or ground hard
Life-CellNo draw/rechargeMP loss + dormant
Mundane / LatticeNormalNormal

Suppress ≠ destroy — use Burn-Out Roll (3d) per intent + item type.


Astral

  • Nulls do not project.
  • Assense: void sphere (size = bubble if III–IV); II reads as void / static only.
  • Projector’s body in III–IV bubble: Strain +2/round, Will or snap-back.
  • Null II (Ivan): No bubble — projection unaffected by proximity; touch on body still dispel + Strain +3.
  • Not Lattice — null doesn’t kill net personas.

Law

  • I: Astral disclosure note common.
  • III–IV: Ship Anchor manifest; greenhouse liability; enchant weeks need berth separation.

Crew etiquette (Verdigris)

  • Enchant week: null not in greenhouse annex.
  • Null-touch to clear Strain = ask first — it hurts like grounding a live wire.
  • Ivan (Null II): no bubble — but Null bleed and accidental touch still matter.
  • Bubble (III–IV only) is always on — not polite to “turn off.”

Source canon: WCP_Website/campaign-authoring/palimpsest/KHESRET-MAGICAL-NULL.md