You can become almost un-killable if you use the crafted armor and crafted gems,
There are crafted gems that give 1.4% Evasion/Dodge, so if you slot these gems into all your crafted armor you will be practically immortal.
You can make 13 crafted items each with 3 gem slots. that is 39 slots in total.
You can put 1.4% in each gem slot. 39x1.4=54.6% dodge
double tab back (S) that is another 50% dodge
Total dodge is 104.6% so no-one will ever hit you. (magic will still hit)
Also, if you prefer, you can use magic immunity gems. Either way, these gems are stacking and giving too much immunity/evasion/dodge and makes you very hard to kill. With this, you will be PVP god