would this be good for aatrox, I normally take this on him and am wondering if it's a bad idea

Would this work on yorick ?

WHen you relize nasus gets this much lifesteal for free

Life steal boyz!

The wording makes this sound as if the shield passive could be stacked. Is this right?

Apparently the tooltip in the Mobafire database isn't correct and the shield is a UNIQUE passive, like the lifesteal.

and if that won't work, use leap strike and flee.

don't shoot me into the void, but building this on jax is not a bad idea.

because of jax' passive, he will have an increased damage output by going toe to toe.
this bonus damage(in the form of 60% bonus AS) results in a high ammount of life steal.
combine this with 2 other good jax items: ruined king blade and hydra, and you have a grand total of 42% lifesteal. because of this insane lifesteal (299,345AD + 1,955AS = 448,369DPS) you'll end up with 188,315 LS/sec. and then i'm not counting along spirit visage, trinity force and rageblade.
and the best part is: by using grandmaster's might and counter strike, you can ensure that your opponent can't deal 188,315 DPS.

Infinity edge will help you dish out damage a little faster then a blood thirster however blood thirster has enough life steal to drag out fights you should have lost and by goin to the jungle you can restore some hp and keep map presence longer

If you do stack two of them stunning and slowing you can be devastating especially in team fights tryndamere gets his alt and just flies back up xD

R.I.P BT 2010-2014

This is the best item in the game. You just stack the damage and the life steal is great. This is an aatrox and riven item.

Bloodthirster > IE.
More damage, unless you build like a phantom dancer. 25% on its own? eh.... I'd rather have 100 damage and 18% extra lifestea;(way easy to farm 30 minions)