Mastery of Faerie Enchantment

(Player's Guide to Eberron, page 125, DnD 3.5)

[General]

You have learned to calculate the precise location of Thelanis at any given time, and to use that knowledge to improve your ability to control the minds of other creatures.

Prerequisite

Extend Spell, Knowledge (the planes) 2 ranks, Spellcraft 6 ranks

Benefit

You can spontaneously apply the effect of the Extend Spell metamagic feat to any enchantment spell you cast. Doing this has no effect on the spell's level or casting time.