Summoning* Domain

Source: Defenders of the Faith
Deities: Acerak, Arden, Azhull, Baeast, Brakah, Chishleen, Daer-Koch, Dauwan Dal-daul, Genhaedi, Hiteh, Illustree, Lathidus, Shistar, Zhakrin.
Granted Power: You cast any summon monster spell at twice your caster level, increasing the range and duration of the spell.
    *This domain is available only as a prestige domain.

Summoning* Domain Spells
  1  Summon Monster I. Calls outsider to fight for you.PHB
  2  Summon Monster II. Calls outsider to fight for you.PHB
  3  Summon Monster III. Calls outsider to fight for you.PHB
  4  Lesser Planar Ally. Exchange services with an 8 HD outsider.PHB
  5  Summon Monster V. Calls outsider to fight for you.PHB
  6  Planar Ally. As lesser planar ally, but upto 16 HD.PHB
  7  Summon Monster VII. Calls outsider to fight for you.PHB
  8  Greater Planar Ally. As lesser planar ally but upto 24 HD.PHB
  9  Gate. Connects two planes for travel or summoning.PHB