Hellish Horde(Planar Handbook)
Conjuration (Summoning) [Evil, Lawful]
Level: Cleric 9, Sorcerer 9, Wizard 9,
Components: V, S,
Casting Time: 10 minutes
Range: Medium (100 ft. + 10 ft./level)
Effect: Two or more summoned creatures, no two of which can be more than 30 ft. apart
Duration: 10 min./level (D)
Saving Throw: None
Spell Resistance: No
This spell summons a horde of devils from the Nine Hells of Baator to serve you.
When the spell is complete, 2d4 bearded devils appear.
Ten minutes later, 1d4 chain devils appear.
Ten minutes after that, one bone devil appears.
Each creature has maximum hit points per Hit Die.
Once these creatures appear, they serve you for the duration of the spell.
The devils obey you explicitly and never attack you, even if someone else manages to gain control over them.
You do not need to concentrate to maintain control over the devils.
You can dismiss them singly or in groups at any time.