The Cleaver Saber can be found on floors 20-30? being used by random screamers.
You can also make this weapon by finding a blueprint and turning it in.
|UNIQUE MASTERY RANKS|
|6||SKILL Killer Needle or|
|10||COMBO + Phantom Sting At combo level 3, press or with the right timing.|
|Weapon Mastery Level Click here for the universal Mastery Ranks|