rainmaker

Short definition from Wiktionary

Noun

1. 1
   Someone or something that causes or attempts to cause rain to fall.
2. 2
   Someone or something that causes or attempts to cause rain to fall: A medicine man, shaman, or the like, who seeks to induce rain through performing rituals, as in African or Native American cultures.
3. 3
   Someone or something that causes or attempts to cause rain to fall: A person who seeks to induce rainfall through scientific methods, such as cloud seeding.
4. 4
   A person having the ability to generate business, raise funds, or otherwise engineer success for a company, organization, etc.
5. 5
   A batted ball that is hit very high into the air.