Tiefling Warpick (OH)
The Tiefling Warpick can be purchased during the Call to Arms: Straight to Helm event.
It has poor weapon stats, as it is specifically intended to be used with the change appearance option for transmutation, rather then as actual equipment.
This weapon is functionally identical to the [Tiefling Warpick]. Both of them can be used as either Main Hand or Off Hand Weapons and can be transmuted as either one equally. However, they still must be acquired individually in order to complete the Collection.