Dilate Aura
(Fiendish Codex II: Tyrants of the Nine Hells, page 83, DnD 3.5)
[General]
You can extend the range of your aura.
Prerequisite
Aura ability
Benefit
Once per encounter, you can double the range of your aura. The expanded aura lasts for a number of rounds equal to your Charisma modifi er (minimum 1 round).