TamQue is a legendary Runeword created by combining a Tam Rune of Ritual and a Que Rune of Invocation.
How to Create TamQue
You can create TamQue by adding the legendary Tam Rune of Ritual and the rare Que Rune of Invocation to a two-socketed Helm, Chest Armor, Pants, or Two-Handed Weapon.
Tam - Cast a non-Channeled Core Skill. (25)
Que - Evoke the Druid's , granting yourself a Barrier. (800)
Earthen Bulwark
Overflow
TamQue can not overflow because the amount of Offering you receive from the Tam Rune exactly fills the required Offering of the Que Rune.
Overflow occurs when your Ritual generates more Offering than required for the Invocation. The overflow effect is proportional to the amount Offering overflows.