Casting Time 1 standard action
Components V, S, M (any fine powder), F (a tube or similar implement)
Range 20 ft.
Targets all creatures, spells, and objects in a burst centered on you
Duration instantaneous and 1 minute/level
Saving Throw Will negates; Spell Resistance yes
You blow the powder through a tube or other implement around you, which briefly clings to and then magically reveals all invisible creatures and objects in the area.
All effects that cause invisibility are immediately ended and no new effect can make those creatures or objects invisible again for 1 minute per caster level. All spells and magic items in the area radiate their magic auras as described in detect magic for all to see for 1 minute per caster level. Observers can only interpret the significance of an aura with a successful Spellcraft check as a standard action.
Sandy Petersen’s Cthulhu Mythos, © 2017, Petersen Games; Authors: Sandy Petersen, Arthur Petersen, Ian Starcher.