Offering Butter Lamps is the best most powerful offering because the light symbolizes wisdom. It also creates harmony and generates merit while promoting success, prosperity, longevity and world peace. When offered on behalf of the deceased prayers are also recited to liberate them and have a good rebirth. If one imagines pure light radiating out of the 10 directions as well as offering your own consciousness and/ or energy your mind becomes clearer, free from darkness, like a light in darkness. When this is done on an alter or in front of a Buddha our benefits increase immeasurably. All of ones obstacles to good health and intelligence will be removed as well as receiving clarity of mind