The Bracteros Effect

Source: Elaris Unbroken

2nd Edition
This spell was devised by the great mage Basil Bracteros as yet another utility spell for subterranean explorers. The mage chooses up to three light sources (torches, continual light rocks, glowing swords, etc.) and sprinkles a bit of powdered gypsum over them while intoning this spell. For the duration (which Basil was unable to fix to a specific time), the light sources are effectively invisible to anyone but those within twenty feet. In other words, the light sources work normally for those carrying them and others within a 20' radius, but are completely masked to those outside that radius. Of course the Bracteros effect does not grant true invisibility, nor does it mask noise, but as a means of shielding one's light sources from curious—and potentially hostile—eyes, it has no equal. The material component for this spell is a bat's eyes.
 
5th Edition
Choose up to three sources of light you can see within range. For the duration, any creature more than 20 feet away from that light source cannot see the light shed by it.   At Higher Levels. When you cast this spell using a higher level spell slot, you can target up to one additional light source for each slot above its base level.
 

This is a rare option

This option requires special permission to take. In the case of spells, psionic powers, and similar options, this option must be found in the world and cannot be taken upon level-up.

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2nd Edition
School
Alteration
Level
Arcane 2
Casting Time
1 round
Range
200 feet
AoE
3 light sources
Components
V, S, M (A bat's eye; and powdered gypsum worth at least 5gp, which the spell consumes)
Duration
1-3 hours + 1 hour/level
Save
None

 
5th Edition
School
Alteration
Level
Bard 1, Wizard 2
Casting Time
1 Action
Range
120 feet
Components
V, S, M (A bat's eye; and powdered gypsum worth at least 5gp, which the spell consumes)
Duration
1d3 Hours

 
Pathfinder 2e
School
Alteration
Tags
ANSWER
Traditions
ANSWER
Cast
Range
120 feet
Defense
ANSWER