LithXal is a legendary Runeword created by combining a Lith Rune of Ritual and a Xal Rune of Invocation.
How to Create LithXal
You can create LithXal by adding the legendary Lith Rune of Ritual and the rare Xal Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Lith - Stand still while fighting for 0.31 seconds. (25)
Xal - Gain 20% Maximum Life for 6 seconds. (200)
Overflow
LithXal can not overflow because the amount of Offering you receive from the Lith Rune exactly fills the required Offering of the Xal Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.