I'm thinking of giving Subtlety a go on Alysrazor...
I would use this custom spec:
Talent Calculator - World of Warcraft
- I have taken 3/3 Coup de Grace/Lethality and nothing in Puncturing Wounds. My reasoning being that with 24-25 stacks of the haste buff, I will be crit capped anyway.
- I have also maxed precision to minimize poison misses. I would max my mastery as the encounter provides the haste and crit I need. I have also taken enveloping shadows so that I can easily stay up in the air during Firestorm.
I think that this spec can possibly do a lot of damage per global cooldown, but I am worried about the non 24 stack phase damage with no puncturing wounds.
Glyphs are tricky... I feel like using the Backstab Glyph is poor synergy with the rest of my spec, but I will surely be energy starved without it on low haste, it'll still crit upward of 35% of the time even without it which isn't exactly nothing. Perhaps just stick to normal and replace Shadow Dance glyph with Hemorrhage.
Elusiveness + Prep taken to maximise Vanish/Find Weakness uptime.
What do you guys think?