Omastar is pretty good. I completely forgot about him. He was worthy of old D-tier, now he's questionable. I wish he had more health. He manages to sleep talk well and he often forces snorlax to switch. Haze is meh....I suppose if you have problems with sleep talking curselax you can run haze. Being weak to both lightning and ground is his worst quality. Omastar is pretty unique and functions similarily to suicune, but different enough to earn him usability.