Less of an katana and more a curved slab of iron, the famed executioner's blade Zankiou is said to be the deadliest weapon ever forged by the korobokuru.

You have a +2 bonus to attack and damage rolls with this weapon. In addition, on a hit, this weapon deals an extra 2d6 fire damage.

The odachi has 10 charges, which are used to fuel the spells within it. While you are attuned to this weapon, you can use an action to expend 1 or more of its charges to cast one of the following spells from it, using your spell save DC: Aganazzar's Scorcher (2 charges), Lightning Bolt (5 charges), Sunbeam (9 charges). No components are required.

The weapon regains 1d6 + 4 expended charges each day at dawn. If you expend the weapon's last charge, roll a d20. On a 1, the weapon explodes with the light and heat that it was imbued with upon creation. Each creature within a 60ft radius takes 5d10 radiant and 5d10 fire damage, and must make a dc 18 constitution saving throw or be blinded for 1 minute. You can repeat this saving throw at the end of each of your turns.

Proficiency with a Longsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Damage: Fire, Bonus: Magic, Weapon Property: Finesse, Damage, Combat, Versatile, Sap