DuckTales Season 1 Episode 7

Webigail befriends a leprechaun cast out by his people. Scrooge inadvertently saves the little man's life, and, knowing that his people have to grant him a wish, demands that he be given their legendary "Golden Caverns" in return. When the little people scheme to punish Scrooge for his greed, Webigail and her friend must save him.