Buying a Mercenary can greatly enhance your experience in D2R, bringing you versatility and survivability, buying one of D2bits Merc Bundles, transforms your Mercenary from being a liability and causing you frustration and Gold cost reviving them all the time, to a core piece of your build being a real life saver, with his Damage,Aura's and tanking.
To heal your mercenary - which is especially useful early game, you can drag and drop a potion on the portrait or Shift + Right click a potion and it will instantly heal them too.
The Bundle Includes,
Eth Thresher Infinity Unmade
Eth Archon Plate Fortitude
Andariel's Visage