Boggart Horde

Create X 1/1 red Goblin creature tokens, where X is the number of mountains you control.
"There was a moment of preternatural silence, then the mountainside exploded with a cacophonous shrieking, and a clanging of swords, as the boggarts emerged from every cave mouth, every fissure, every shadow." -- The Saga of Loric the Charred