FeoVex is a legendary Runeword created by combining a Feo Rune of Ritual and a Vex Rune of Invocation.
How to Create FeoVex
You can create FeoVex by adding the rare Feo Rune of Ritual and the legendary Vex Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Feo - Become Injured or Crowd Controlled. (Cooldown: 10 seconds) (1000)
Vex - Gain +3 to all Skills for 8 seconds. (1000)
Overflow
FeoVex can not overflow because the amount of Offering you receive from the Feo 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.