The Mace of Unending Life from AQ20 is a one handed wepon, however it gives two handed mace skill. I found it a faster wepon than most two handed maces, so if you have this ancient wepon from Ahn'Qiraj and need to level your two handed maces, i suggest throwing it on and using the Mace of Unending Life instead of a slower two handed wepon.
That is all.