So this mage has been underperforming a bit and can't consistently put out the dps needed. I'm not well versed with mages come WoD so can't really help him out alot. Posting logs and hope someone can take a quick looksie ( our Butcher H kill would probably be a good place to start).
https://www.warcraftlogs.com/reports/dqVKCQ7PcfBhFWxD#