They even make bumperstickers of these, which may or may not be what the terton Migyur Dorje had in mind, but who knows? Isn't the objective to get this in front of the largest number of people? Suppose we rent billboards for this image? In any event, the promise is as follows:
"Those who see this script will not experience the three lower realms and will be liberated from the fear of falling into the lower realms; will be purified of the five poisons and will be freed from the results of one's karma; will be freed from the fear of remaining in samsara."