The Thrifblade is a powerful two-handed sword used for delivering clean and accurate damage. It is very suitable to those who wield swords, and an ideal tanking weapon. However with something such as this, it is very hard to get. It can be given to a Power Core Dealer for 100 to receive in return, the [Thrifblade of Power].
The Thrifblade drops from level 65 and above monsters, specifically humanoids and various guardians of hostile places. Elites drop this weapon on the rare occasion as well. The chances of getting one are exactly 2.5%. It is also an optional reward from the Quest: Known Tools.
It can be dropped from stakes or Nether Realm FFA, or trades. There is no other way to get it in the game.