UrWat is a rare Runeword created by combining a Ur Rune of Ritual and a Wat Rune of Invocation.
How to Create UrWat
You can create UrWat by adding the magic Ur Rune of Ritual and the rare Wat Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Ur - Your Minion or Companion kills an enemy or dies. (10)
Wat - Evoke the Necromancer's , Slowing enemies, reducing their damage, and letting you Execute them. (100)
Horrid Decrepify
Overflow
UrWat 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.