XolVex is a legendary Runeword created by combining a Xol Rune of Ritual and a Vex Rune of Invocation.
How to Create XolVex
You can create XolVex by adding the legendary Xol Rune of Ritual and the legendary Vex Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Xol - Invoke a Skill from another Class. (150)
Vex - Gain +3 to all Skills for 7 seconds. (1000)
Overflow
When XolVex overflows, you receive the Vex Rune's overflow effect (Increased Duration) 0.05 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.