AhuOno is a legendary Runeword created by combining a Ahu Rune of Ritual and a Ono Rune of Invocation.
How to Create AhuOno
You can create AhuOno by adding the legendary Ahu Rune of Ritual and the magic Ono Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Ahu - Lucky Hit: Up to a [100|%|] chance against Injured enemies. (25)
Ono - Invoke the Druid's Dancing Bolts, seeking and dealing damage to enemies. (25)
Overflow
AhuOno can not overflow because the amount of Offering you receive from the Ahu Rune exactly fills the required Offering of the Ono Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.