I don't have real logs now, but the battle went like: He sends out Medicham I send out Metagross. Medicham uses Hi-Jump-Kick! Metagross loses 80% of it's HP Metagross uses Gravity! Gravity intensified! Medicham uses Hi-Jump-Kick Metagross loses 20% of it's HP Metagross faints. Gravity is supposed to make certain moves fail (fly, bounce, hi-jump-kick, jump-kick, splash, magnet rise) http://bulbapedia.bulbagarden.net/wiki/Gravity_(move)