Ward of Khyber

(Dragonmarked, page 145, DnD 3.5)

[General]

Your aberrant dragonmark protects you against the powers of those with true dragonmarks.

Prerequisite

Any aberrant dragonmark

Benefit

You gain spell resistance against the spelllike abilities of true dragonmarks. The strength of your spell resistance is determined by the power of your aberrant dragonmark.

In addition, you can use a swift action to make your aberrant dragonmark invisible to the naked eye. This ability is usable once per day and has a duration of 1 hour per character level.