CemZec is a rare Runeword created by combining a Cem Rune of Ritual and a Zec Rune of Invocation.
How to Create CemZec
You can create CemZec by adding the magic Cem Rune of Ritual and the rare Zec Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Cem - Cast Evade. (75)
Zec - Reduce your active Ultimate Cooldown by 2 seconds. (200)
Overflow
When CemZec overflows, you receive the Zec Rune's overflow effect (Further Reduced Cooldown) 0.13 times.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.