Berserker Blade

The Beserker Blade is a katana in Dark Souls II

Location
The Beserker Blade can be found in Belfry Sol. It is drop by a red phantom that uncommonly spawns (resting at a bonfire a few times should cause it to respawn). However, acquiring the Beserker Blade also requires the player to be a member of the Bell Keepers covenant, and where the ring of that covenant.