Ashbound

(Eberron Campaign Setting, page 50, DnD 3.5)

[General]

You have been trained in the druidic traditions of the Ashbound, seeing yourself as one of nature's avengers. You consider the use of arcane magic to be a vile and unnatural act.

Prerequisite

Ability to spontaneously cast summon nature's ally

Benefit

The duration of your summon nature's ally spells is doubled. Creatures summoned by those spells receive a +3 luck bonus on their attack rolls.