CemWat is a rare Runeword created by combining a Cem Rune of Ritual and a Wat Rune of Invocation.
How to Create CemWat
You can create CemWat by adding the magic Cem Rune of Ritual and the rare Wat Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Cem - Cast Evade. (50)
Wat - Evoke the Necromancer's , Slowing enemies, reducing their damage, and letting you Execute them. (100)
Horrid Decrepify
Overflow
CemWat can not overflow because the Wat 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.