YulLac is a legendary Runeword created by combining a Yul Rune of Ritual and a Lac Rune of Invocation.
How to Create YulLac
You can create YulLac by adding the legendary Yul Rune of Ritual and the rare Lac Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Yul - Cast a Skill with a Cooldown. (50)
Lac - Evoke the Barbarian's , reducing your damage taken. (800)
Challenging Shout
Overflow
YulLac can not overflow because the amount of Offering you receive from the Yul Rune exactly fills the required Offering of the Lac Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.