Things that can be done with mantra

heal
strengthen
relieve
purify
bring light
protect
clarify
liberate from samsara
facilitate the liberation from samsara
comfort the lonely
bring about the manifestation of the good

rescue the crazy, the out of balance
hold back the endangered
give riches to the poor
relieve depression
cure depression
give direction
strengthen realization
eliminate maras
pacify, remove the influence of, transform maras
increase realizations of the graduated path,
and all realizations  

Jason Espada