NaguOhm is a legendary Runeword created by combining a Nagu Rune of Ritual and a Ohm Rune of Invocation.
How to Create NaguOhm
You can create NaguOhm by adding the legendary Nagu Rune of Ritual and the legendary Ohm Rune of Invocation to a two-socketed Helm,
Chest Armor,
Pants, or
Two-Handed Weapon.
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Overflow
NaguOhm can not overflow because the amount of Offering you receive from the Nagu Rune exactly fills the required Offering of the Ohm Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.