Inaccurate?

Summon Aspect of Bahamut

(Races of the Dragon)

Conjuration (Summoning) [Good]
Level: Cleric 7, Sorcerer 7, Wizard 7,
Components: V, S, AF, DF,
Casting Time: 1 round
Range: Close (25 ft. + 5 ft./2 levels)
Effect: One aspect of Bahamut
Duration: Concentration (maximum of 1 round/level) + 1 round
Saving Throw: None
Spell Resistance: No

You send a plea to Bahamut and are answered by the appearance of a long, sinuous dragon covered in silver-white scales that sparkle and gleam.
If you are a nongood spellcaster, you cannot cast this spell.
By casting this spell, you request Bahamut to send you one of his aspects.
Otherwise, the aspect appears where you designate and acts immediately, on your turn.
It attacks your opponents to the best of its ability.
If you can communicate with the aspect (it understands Celestial, Common, and Draconic), you can direct it not to attack, to attack particular enemies, or to perform other actions before the duration elapses.
More information on the aspect of Bahamut can be found on page 152 of this book.
Arcane Focus: A silver dragon scale.