What is a wizard supposed to do against (horde) reflect damage?
Every time I increase my dps it gets worse. Blood magic isn't helping.
Depends on your build. I run a CM/WW build and just go in there and start spamming things and do fine. With Prismatic Armor up, 2.2% life steal, and 579 life on hit, I still gain life even if Diamond Skin wears off. Here's my profile:
http://us.battle.net/d3/en/profile/Talaysen-1383/hero/5623738 . (The Storm Crow does add life on hit, but I was doing fine without that, too.)
One thing you can do, as mentioned, is to get a 2H with 6% life steal. Swap it in when you find something with reflect damage. Since you're not going to be using it all the time, you don't have to be too picky on stats. Just don't forget to swap everything back afterwards...
For RD, Life Steal is the only solution. I generally consider LoH much better than LS, but for RD, there's only life steal. You need over 3%, life 5-6 to really overcome RD.
Yeah, life steal is generally better against reflect damage. If you use life on hit, and then get more DPS, the life on hit doesn't scale up, while life steal does.
I will point out that life steal is better than life on hit at high damage values. At say 100k DPS, then a 100% damage skill will return 600 life per target hit at 3% life steal. Since life on hit has the proc coefficient thing, even if you have 1000 life on hit, you may get less than 600 of it. Or 0 since some skills have 0 proc coefficient. Of course, the breakeven points depend on class and build, but at some point, life steal will be better. I have ~70k (sheet) DPS and I think I get more from my 2.2% life steal than my 579 life on hit. But my proc coefficients kind of suck.
BTW, does armor and resist affect RD?
They do, yeah. If you get enough of them, then you can heal up faster than you take damage with just life steal. You need to have an effective damage reduction of 94% from both (assuming 3% life steal), though, so it's pretty high... If you dual wield / 2H for 6% life steal, you only need 88%.
Lifesteal isn't what I want to hear. My shenlongs has LOH and so does my hellfire ring. lol.
It sucks they don't have lifesteal on any armor but a barb belt.
I use both. I suggest getting life steal on your weapon if you can, then getting the life on hit on rings/amulets. Your DPS is probably high enough that life steal is better than life on hit anyway.