YulMet is a legendary Runeword created by combining a Yul Rune of Ritual and a Met Rune of Invocation.
How to Create YulMet
You can create YulMet by adding the legendary Yul Rune of Ritual and the magic Met Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Yul - Cast a Skill with a Cooldown. (50)
Met - You leave the Necromancer's Desecrated Ground behind you for 3 seconds, dealing damage to enemies within. (100)
Overflow
YulMet can not overflow because the amount of Offering you receive from the Yul Rune exactly fills the required Offering of the Met Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.