I can't come up with anything I like, I love assassins & I PvP as a rogue in WoW but I'm just having some trouble with a level 50 assassin build. Anything past level 50 is fine as well, but I don't base anything around that, the only way I will ever come close to 81 is using the Infinium glitch, whats the point in 81? My vampire necromage is level 59, I don't see any reason going higher though. He was more then fine at level 50 for Master,

What is your ideal level 50 assassin build for Master?

I specialize all of my characters. So, for the most part they never get very far above 50. However, my Assassins always get into the 60s. That's because the use so many different skills.

1H, Illusion, Sneak, Alchemy and Archery for the main, while supplemented by Alteration, Enchanting, Smithing, Lt Armor and Pickpocket.

Then you have the ones you can't control..Speechcraft and Lockpick.

Why do you need lvl 50 build? lvl 10 assasin can do everything already.

I would go max dagger tree (I never go for the "shadow warrior"). Maybe couple points in the first perk and also need 2 items, mehrunes razor (because it looks cool) and double whammy gloves (you the item that gives you 200% damage increase). In reality you are propably already lvl 20 when you get the items so you can spend left over points in alchemy/illusion/archery.