Quicken Dragonmark( Magic of Eberron, p. 51)
You can use your dragonmark abilities more quickly.
You can use your least dragonmark spell-like ability as a swift action, as if casting a quickened spell. All spell-like abilities of your least dragonmark are quickened, should you have more than one spell-like ability from your mark (for instance, if have two levels in the dragonmark heir prestige class).
You must carry a Siberys shard attuned to your dragonmark, and worth at least 50 gp, for this ability to function. You can select this feat multiple times. To take this feat a second time, you must have the Lesser Dragonmark feat, and to take it a third time, you must have the Greater Dragonmark feat. The second time you select it, you can quicken the spell-like abilities of your lesser dragonmark. The third time you select it, you can quicken the spell-like abilities of your greater dragonmark. Siberys marks and aberrant dragonmarks are unaffected by this feat.