Greater Dragonmark

 
Prerequisite(s): Member of appropriate Dragonmarked Race and House, 12 ranks in two skills
 
Benefit: You gain a Greater Dragonmark and can use one of the spell-like abilities associated with that mark per day. You also gain one additional use of your Least and Lesser Marks (if you have them) per day. The save DC is 10 + Spell level + Cha modifier. Your caster level for your Dragonmark spell-like abilty is 10 + your Dragonmark Heir level (If any).
 
Source: Eberron Campaign Setting