BacWat is a legendary Runeword created by combining a Bac Rune of Ritual and a Wat Rune of Invocation.
How to Create BacWat
You can create BacWat by adding the legendary Bac Rune of Ritual and the rare Wat Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Bac - Travel 5 meters. (50)
Wat - Invoke the Necromancer's , Slowing enemies, reducing their damage, and letting you Execute them. (100)
Horrid Decrepify
Overflow
BacWat 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.