CirTeb is a magic Runeword created by combining a Cir Rune of Ritual and a Teb Rune of Invocation.
How to Create CirTeb
You can create CirTeb by adding the magic Cir Rune of Ritual and the magic Teb Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Cir - Cast the same non-Channeled Skill 3 times in a row. (50)
Teb - Invoke the Necromancer's , counterattacking damage from enemies and Healing you when they die. (100)
Abhorrent Iron Maiden
Overflow
CirTeb can not overflow because the Teb Rune does not have an overflow effect.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.