KaaCeh is a rare Runeword created by combining a Kaa Rune of Ritual and a Ceh Rune of Invocation.
How to Create KaaCeh
You can create KaaCeh by adding the rare Kaa Rune of Ritual and the magic Ceh Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Kaa - Lose 1% of your Maximum Life. (2)
Ceh - Summon a Spirit Wolf to attack enemies for 8 seconds. (100)
Overflow
KaaCeh can not overflow because the amount of Offering you receive from the Kaa Rune exactly fills the required Offering of the Ceh Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.