Some further details on what needs to be done can be found on Path of Exile Wiki:To-do list/Automatic upgraded from and issues can be posted on the talk page. Brain Rattler is a unique Meatgrinder.
30% increased Stun Duration on Enemies
Adds (80-100) to (320-370) Physical Damage
50% of Physical Damage Converted to Lightning Damage
15% chance to Shock
10% chance to Cause Monsters to Flee
Enemies you Shock have 30% reduced Cast Speed
Enemies you Shock have 20% reduced Movement Speed
Damage Penetrates 20% Lightning Resistance
The mind may have no limits, but the skull sure does.
A simple tool to price check your items in path of exile by "copy and paste". It is that simple!
Price in Leagues