Shadow of the Elves - Season 1 Episode 5 Rainmaker

While the Meadowlands are overwhelmed by a serious drought, the traitor Phaedon devises a cunning plot to aid Lord Kann in his conquest of the fairy village. Phaedon begs the fairies to rely on his magic to end the drought. He will need Thalia to assist his magic, by playing her harp. Phaedon's magic brings on some rain, which turns into a fierce storm that floods the Meadowlands and allows Lord Kann's submarine fleet to invade. Phaedon convinces Thalia and the fairy council that this is her fault. However, Daiman persuades Thalia to trust herself and her own magic abilities. She once again takes up her harp and plays. The storm subsides and the dangerous flood ebbs away, with the invading elf forces retreating in its wake.