This really isn't my thing. I usually stumble across these things when I'm researching, and if they're at all relevant, I add them into the campaign. But I'll add a few things here as I stumble across them.
The Icon enables the invocation of the Virgin Mary, so that the Icon may be used to heal (as the clerical spell), up to 100 persons per day. Mere possession of the Icon provides +2 to hit, damage and morale checks to all within one mile of the artifact. It has been said by some that upon the invocation of the Icon that the Virgin Mary is visible to the purest of heart and the most innocent, particularly children, and that she can be spoken to and will answer with perfect augury. The Icon will cure blindness, deafness, disease and those born lame or suffering from a bodily disorder that has been possessed since birth.
Completed during the rule of the Safavid Shah Tahmasp I in the mid-16th century, measuring 38’ long by 18’ wide. The inscription upon the carpet, “I have no refuge in the world other than thy threshold; there is no protection for my head other than this door,” reveals it’s use. Created as a means to converse with the prophet Mohammed or to present oneself in the presence of Allah, the carpet will allow transport to any plane of existence or to any place in the Prime Material Plane, for as many as the carpet will allow, merely by kneeling, facing the direction of Mecca and speaking the invocation. A second invocation will return the user back to the carpet.