A young Oden and young Whitebeard using their famous weapons

 

Name: Murakumogiri (Gathering-Clouds Cutter)
Origin: One Piece
Type: Naginata (one of the 12 Saijo O Wazamono (the highest quality swords within One Piece, means “Supreme Grade Swords”))
Powers and Abilities: In the hands of a master naginata user, it complements the user by greatly enhancing the user’s cutting power and destructive potential, very durable (can withstand extreme temperatures seeing as it was unfazed after clashing with Akainu's magma and was frozen by Aokiji's ice)
Destructive Capacity: Small continent level in the hands of Whitebeard
Wielder(s): Whitebeard
Material or Element: Likely steel and or other premium materials (is one of the highest-graded weapons in the One Piece series)
Needed Prerequisite for Use: None notable, but master-level skill is needed to in order to harness its full potential
Notable Attacks/Techniques or Alternate Forms:

- Halberd Raksha (Naginata Rasetsu): Whitebeard surrounds Murakumogiri with a quake bubble to greatly increase its striking power and range.

Other: