Conjuration(Calling)
Level: Dragon 7, Sorcerer 7, Wizard 7
Components: V, XP
Casting Time: 10 minutes
Range: Close (25 ft. + 5 ft./2 levels)
Effect: One called dragon of 18 HD or less
Duration: Instantaneous
Saving Throw: None
Spell Resistance: No
This spell functions like lesser dragon ally, except you can call a single dragon of up to 18 HD.
XP Cost: 250 XP.
Special: Sorcerers cast this spell at +1 caster level.
Source: Spell Compendium (Page 72)