CirMet is a magic Runeword created by combining a Cir Rune of Ritual and a Met Rune of Invocation.
How to Create CirMet
You can create CirMet by adding the magic Cir Rune of Ritual and the magic Met Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Cir - Cast 5 Skills then become exhausted for 3 seconds. (300)
Met - You leave the Necromancer's Desecrated Ground behind you for 3 seconds, dealing damage to enemies within. (100)
Overflow
When CirMet overflows, you receive the Met Rune's overflow effect (Increased Duration) 2 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.