Great Splitter is a Weapon Art in Derelict. Great Splitter winds up before rolling forward to slam your target twice, dealing moderate physical damage.
"Slash down and dealing 40% Power damage while leveraging your sword to flip forward before coming down and dealing 80% Power damage."
Acquisition
Great Splitter can be obtained by heading to the Field of Demise. On the cliff overlooking the crash-landed krab , you can find the Chest containing its respective Ancient Arts Scroll. (Map Link)