CemYom is a legendary Runeword created by combining a Cem Rune of Ritual and a Yom Rune of Invocation.
How to Create CemYom
You can create CemYom by adding the magic Cem Rune of Ritual and the legendary Yom Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Cem - Cast Evade. (75)
Yom - Invoke the Druid's , Stunning enemies and restoring Primary Resource. (500)
Petrify
Overflow
CemYom can not overflow because the Yom 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.