This is my second find in Diablo so far
First you need to access ACT IV. on INFERNO DIFFICULTY (use the pub game exploit)
You don´t need any gear. The only thing I recommend for this to be effective is to get BONUS MAGIC FIND GEAR from auction (you can also buy
a gear with less magic find from vendors in ACT III. starting area).
STEP ONE
Teleport here and run north to next location.
Ignore Leah (too much effort to kill this purple)
Use the altar to get to next location. Here you will be looking for Maghda or Zoltan
Maghda is the easy one. Just stay behind Tyreal and let him eat the damage and dps Maghda down.
Zoltan is little harder to beat. You have to either block him by exploiting the blocking method or just kite around the altar.
It usually takes me about 50 seconds to kill Maghda illusion (DH specced for full mobility). I get 1 to 3 blue items at min per run.