RAINMAKER
rainmaker
(noun) American Indian medicine man who attempt to make it rain
rainmaker
(noun) executive who is very successful in bringing in business to his company or firm
Source: WordNet® 3.1
Etymology
Noun
rainmaker (plural rainmakers)
Someone or something that causes or attempts to cause rain to fall.
Synonym: pluviculturist
An African or Native American medicine man who seeks to induce rain through performing rituals.
A person who seeks to induce rainfall through scientific methods, such as cloud seeding.
(originally, Canada, US, figuratively, informal) A person having the ability to generate business, raise funds, or otherwise engineer success for a company, organization, etc.
(baseball, informal) A batted ball that is hit very high into the air.
Source: Wiktionary