Assassination Rogue
Rotation
Opener: Stealth, Cheap Shot or Ambush, Sinister Strike to 5 combo points, Slice and Dice.
Priority: Keep Slice and Dice up, then Eviscerate at 5 points (Rupture on long fights if the tank holds threat). Sinister Strike is the builder; Forever's new Shank (level 24) replaces Backstab from the front where the build has it.
Cooldowns: Blade Flurry + Adrenaline Rush on the pull; Cold Blood before a 5-point Eviscerate; Vanish to drop threat.
Forever notes: Forever rebuilt the Rogue trees around Shank and Poised (Nov 2 notes); the starter build on the builds page follows the new trees. Mongoose and Instant Poison on the weapons.
Stats
Hit to 9% (poisons also need spell hit), Agility, Crit (Seal Fate), then attack power, then Stamina. Daggers with high top-end damage for Mutilate.
Instant Poison on both daggers; Venom makes poison a big slice of your damage.
Numbers for every spec and a gear comparer: stat weights.
Where it ranks
See the tier lists for PvE and PvP placement, and Classic vs Forever changes for what Blizzard altered in this class.
Wowhead and Icy Veins keep spec guides of their own: Icy Veins Assassination Rogue, Wowhead class guides. Our rotation notes are editorial, written for the Nov 2 tuning.