Improved Arcane Lock

Stronghold Builder's Guidebook (SB)Supplementals (3.0)
School
Abjuration
Casting Time
1 full round
Components
V, S, M
Range
Touch
Target
One door, chest, or portal up to 30 sq. ft./caster level
Duration
Permanent
Saving Throw
None
Spell Resistance
No

This spell works identically to arcane lock, except that at the time of casting you may attune up to 1 individual per caster level to the object targeted by the spell.

These individuals (who need not be present during casting) can freely pass the improved arcane lock as if they had cast the spell.

Material Component: Gold dust worth 25 gp, plus 5 gp per individual attuned.