Caster Glove...

Following items must be placed inside the Horadric Cube:

A Magic Jewel
A Perfect Amethist
A Ort rune
Magic Leather Gloves or exceptional / Elite version of this item.

Resulting item will have the following properties:
+ (1-3) Mana Per Kill
Regenerate Mana (4-10)%
+ (10-20) To Mana

and one to three additional random magic modifiers.