The Portal domain was a deity domain that granted divine spellcasters like clerics with spells and powers related to magic portals. They gained the ability to sense nearby portals, regardless of said portals' activity.
Novice spellcasters were able to use the summon monster I, analyze portal, and dimensional anchor spells. Clerics of some experience could cast dimension door, teleport, and banishment. Those that were masters of this domain had access to etherealness, dimensional lock, and gate.[note 1]
A priest of the Underdark with this domain had an alternative suite of spells. Novice spellcasters were able to use the portal stabilization, analyze portal, and portal view spells. Clerics of some experience could cast dimension door, portal barricade, and portal-to-portal redirect. Those that were masters of this domain had access to etherealness, portal reformat, and gate.
- Originally giving maze, this was exchanged for dimensional lock in Player's Guide to Faerûn for v.3.5.
- Ed Greenwood, Sean K. Reynolds, Skip Williams, Rob Heinsoo (June 2001). Forgotten Realms Campaign Setting 3rd edition. (Wizards of the Coast), p. 64. ISBN 0-7869-1836-5.
- Richard Baker, James Wyatt (March 2004). Player's Guide to Faerûn. (Wizards of the Coast), p. 89. ISBN 0-7869-3134-5.
- Bruce R. Cordell, Gwendolyn F.M. Kestrel, Jeff Quick (October 2003). Underdark. (Wizards of the Coast), p. 53. ISBN 0-7869-3053-5.