YulLum is a legendary Runeword created by combining a Yul Rune of Ritual and a Lum Rune of Invocation.
How to Create YulLum
You can create YulLum by adding the legendary Yul Rune of Ritual and the magic Lum Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Yul - Cast a Skill with a Cooldown. (50)
Lum - Restore 2.5 Primary Resource. (5)
Overflow
When YulLum overflows, you receive the Lum Rune's overflow effect (Increased Resource Restored) 9 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.