NaguVex is a legendary Runeword created by combining a Nagu Rune of Ritual and a Vex Rune of Invocation.
How to Create NaguVex
You can create NaguVex by adding the legendary Nagu Rune of Ritual and the legendary Vex Rune of Invocation to a two-socketed Helm,
Chest Armor,
Pants, or
Two-Handed Weapon.


Overflow
NaguVex can not overflow because the amount of Offering you receive from the Nagu Rune exactly fills the required Offering of the Vex Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.