IgniYom is a legendary Runeword created by combining a Igni Rune of Ritual and a Yom Rune of Invocation.
How to Create IgniYom
You can create IgniYom by adding the legendary Igni Rune of Ritual and the legendary Yom Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Igni - Stores offering every 0.3 seconds. Cast a non-Basic Skill to gain the stored offering. (Up to 500 Offering). (25)
Yom - Invoke the Druid's Skill, Stunning enemies, restoring Primary Resource. (500)
Petrify
Overflow
IgniYom can not overflow because the amount of Offering you receive from the Igni Rune exactly fills the required Offering of the Yom Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.