4.0 Crit Build.

Little something I came up with tonight, haven't put it through any real testing in clan matches but it should hold its own.

Hero: Agi or Strength of choice. Agi has better stacking critical strike items but you have flexibility here. Since it's mainly passive I suggest Illidian or Hunter. I also suggest using this on melee as avatar blocks ranged crits.
Offensive: Death Strike
Defensive: Static Shock (farm spell)
Misc: Endurance Aura
Innate: Life Regen (You can swap this for pretty much anything)
Ultimate: Avatar, Reincarn. Silent Night or Dread Ritual can work if your going mass burst damage or ganking. I've recently taken Dread Ritual into a few builds for ganking purposes. Completley mana-free, fast cooldown (in longer duels you can pop it twice.) It also does AOE damage, many pubs have i ran up one shotted the hero at 1/2 - 1/3 hp, and his entire creep spawn from a distance. went and creeped a little and repeated.

Focus on SS, toss one point in DSf @ 4, and then off level End aura. Once SS hits level 5-6 or whenever you don't need it so much for farming switch your focus to DS.

Items: Because your farming with a spell that well farms off a % chance of you getting hit you'll defiantly want to load up on armour early game; set armour/power shield, shielding staff etc. As this is more or less flexible between strength and agility I'll leave full item builds up to you. Ring of Speed Demon and a Sword are crucial though.

Just a small comment.

"
Items: Because your farming with a spell that well farms off a % chance of you getting hit you'll defiantly want to load up on armour early game; set armour/power shield, shielding staff etc.
"

On an agility hero, get agi items with high armor. On str, spam STR early with regen; and just grab a magic shield for armor. This is because, if you are on agi, armor comes easier, along with attack speed and damage. However, on STR, if you get a lot of armor, you hit for shit. An organized team of levelers will leave you at level 5 for the first duel. If you are stacking STR for damage, and use your high HP as a shield, you are at least creeping faster and can hit 6-7 against that same, organized team; while preventing possible spell ganks.

I ended up using a speed demon crit master build, got ring of speed demon+axes, and ended up with a some nice dmg, some crits going off both at once (it seems that whenever you get a crit, an extra attack is thrown in, and that procs a crit as well with crit master)

Great build. Needs more vortex.