ZanCeh is a magic Runeword created by combining a Zan Rune of Ritual and a Ceh Rune of Invocation.
How to Create ZanCeh
You can create ZanCeh by adding the magic Zan Rune of Ritual and the magic Ceh Rune of Invocation to a two-socketed 
Helm, 
Chest Armor, 
Pants, or 
Two-Handed Weapon.
Overflow
When ZanCeh overflows, you receive the Ceh Rune's overflow effect (Summon Multiple Wolves) 0.5 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.
Legions
Helltide