This talent route continues with your current leveling spec in affliction. I prefer this spec over the next option as I find the pet too weak at this point in time. However others have sweared by the pet saying it is just as fast.
This spec adds in some destruction talents which give you shadowburn for quick burst damage and faster casting shadowbolts.
Level 51 - 60 Option 1 (41/0/10)
Need gold to try other specs or buy armor? Check out this Gold Guide
