Rainmaker

noun

1. Someone or something that causes or attempts to cause rain to fall.
2. (originally Canada) A person having the ability to generate business, raise funds, or otherwise engineer success for a company, organization, etc.

   "The law firm relied heavily on Charlotte as its main rainmaker to bring in new clients."

3. A batted ball that is hit very high into the air.

   "The slugger is known for hitting rainmakers."