The arms spreadsheet that I created has really been deprecated since 3.0.8; I need to rework it. With Sudden Death changed, theres a lot more that needs to be considered, but my initial work shows: 1) Stay in battle stance, and keep rend up at all times 2) Bladestorm > Execute > Overpower > MS for your cooldowns/jerk reactions 3) Slam only when none of the above 4 is available 4) You should be using an ability EVERY GCD. If everything is on CD, you should slam until something else is available 5) For execute range, if you're bloodlusted/heroism you may be able to spam execute more liberally, but this depends on gear. Tips: 1) For bladestorm, there's a sequence you can go in to get the most bang for your buck: - Execute/MS until your rage is low - Switch to berserker stance - Whirlwind if you have the rage and can still pop bladestorm after - Pop bladestorm - When bladestorm ends, Execute/MS/WW to get your rage back down - Switch back to battle stance and refresh rend if necessary This gives you the extra 3% crit and a shot to whirlwind, with minimum rage loss 2) Glyph of Mortal Strike and Rend. Not sure on the 3rd one with WW changes (I'm fury now). That's all I have for right now; there's more but as I haven't been arms in 3.0.8 (we have a feral druid and combat rogue, so fury is better for the raid).