SWTOR Bosses Guide - Master and Blaster (HM - The Ravagers)
I had to talk really quick and still missed things.
This video assumes you've cleared SM and know the mechanics. The biggest thing is learning to position such that you don't kill other people with your bomb.
The Zorz Guide is fantastic (http://dulfy.net/2015/02/09/swtor-har...)
Most notably, I want to link to their Phase 1 diagram that shows all the patterns. Knowing these patterns is vital for the tanks and the mobile DPS. See the link below. All credit to Zorz.
http://dulfy.net/wp-content/uploads/2...