Undetectable alignment was an abjuration spell that shielded the subject's alignment from detection.[2] It was also the name of the reverse of the divination spell know alignment.[6][7]


This spell could be cast on a creature or an object within close range. This spell rendered the subject's alignment hidden and unknowable from all methods of divination for one day.[2][6][7]

When cast in reverse, the know alignment spell was a divination that allowed the caster to examine the aura of a person or object and get a reading on the alignment of the target. Creatures and objects with intelligence or a will had a chance to resist this spell, but if that failed, the caster could learn the non-neutral alignments (lawful vs. chaotic, good vs. evil) in one minute of quiet concentration. If the caster was able to remain still and concentrate for a full two minutes, then even the subtler alignments could be completely determined.[6][7]


Only verbal and somatic components were required to cast this spell.[2][6][7]


Know alignment/undetectable alignment was created by prolific Netherese arcanist Trebbe in −2237 DR under the name Trebbe's scry alignment, his last spell invention before his accidental death within the same year.[1][12]


  1. 1.0 1.1 1.2 slade, James Butler (November 1996). Netheril: Empire of Magic (The Winds of Netheril). (TSR, Inc.), pp. 22, 24. ISBN 0-7869-0437-2.
  2. 2.0 2.1 2.2 2.3 Jonathan Tweet, Monte Cook, Skip Williams (July 2003). Player's Handbook 3.5 edition. (Wizards of the Coast), p. 297. ISBN 0-7869-2886-7.
  3. Monte Cook, Jonathan Tweet, Skip Williams (July 2003). Dungeon Master's Guide 3.5 edition. (Wizards of the Coast), p. 181. ISBN 0-7869-2889-1.
  4. Ed Greenwood, Sean K. Reynolds, Skip Williams, Rob Heinsoo (June 2001). Forgotten Realms Campaign Setting 3rd edition. (Wizards of the Coast), p. 46. ISBN 0-7869-1836-5.
  5. Ed Greenwood, Eric L. Boyd (March 2006). Power of Faerûn. (Wizards of the Coast), p. 72. ISBN 0-7869-3910-9.
  6. 6.0 6.1 6.2 6.3 6.4 David "Zeb" Cook (August 1989). Player's Handbook (2nd edition). (TSR, Inc.), p. 143. ISBN 0-88038-716-5.
  7. 7.0 7.1 7.2 7.3 7.4 David "Zeb" Cook (April 1995). Player's Handbook 2nd edition (revised). (TSR, Inc.), p. 185. ISBN 0-7869-0329-5.
  8. Jeff Grubb and Andria Hayday (April 1992). Arabian Adventures. (TSR, Inc), p. 152. ISBN 978-1560763581.
  9. slade, James Butler (November 1996). Netheril: Empire of Magic (The Winds of Netheril). (TSR, Inc.), pp. 121–122. ISBN 0-7869-0437-2.
  10. Mark Middleton et al. (1999). Priest's Spell Compendium Volume Two. (TSR, Inc), p. 436. ISBN 9780786914210.
  11. Gary Gygax, David Cook, and François Marcela-Froideval (1985). Oriental Adventures. (TSR, Inc), p. 63. ISBN 0-8803-8099-3.
  12. slade, James Butler (November 1996). Netheril: Empire of Magic (The Winds of Netheril). (TSR, Inc.), pp. 26, 87. ISBN 0-7869-0437-2.
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