The yamato is a powerful blade once wielded by the devil Spada against the Demon lord Mundus. It was later passed down to one of his 2 sons, Vergil and now the sword waits for a new master.

you gain a +3 bonus to attack and damage rolls made with this magic sword and can use your dexterity score rather than your strength score. In addition, you gain the following abilities while attuned to the blade

Spatial rift: As an action, you cut through the fabric of reality, creating a temporary rift between different locations. You choose a different location and/or plane from the one you’re on/at and slice through an unoccupied space within 5 feet of yourself, creating a rift to that other location or plane. The rift can be up to 10 feet high and 10 feet wide, and it lasts for 1 minute. This property as a number of uses equal to your 1/2 your proficiency modifier, minimum of 1.

Anything that enters the rift is instantly transported to the other plane, appearing in the unoccupied space nearest to the rift.

Rapid slash: As an action, you dash 30 feet forward, relentlessly slashing everything in your path.. All creatures within your path must make a dexterity saving throw (Dc 8 + prof + dexterity) Or take 4d8 (4d10 if two handed) Slashing damage.

Void slash: As an action, you Slash at the area before you with tremendous speed, cleaving the air itself and drawing enemies toward you. All creatures within a 15 foot cube in front of you must make a strength saving throw (Dc 8 + prof + dexterity) Or get pulled towords you and knocked prone.

Judgement cut: As bonus action after successful melee attack with this weapon, You Unsheathe your it with blinding speed and unleash a whirlwind of slashes. all creatures within a 10 foot radius around you must make a dexterity saving throw (Dc 8 + prof + dex) Taking 5d10 slashing damage, half as much on a successful save. You have a number of uses of this Abillity equal to your 1/2 your proficiency bonus.

Devil trigger: As a bonus action, you can let the demonic energy within this blade enter your body, Transforming you into a Devil. For the duration of this transformation, all damage you take is halved, you gain a flying speed equal to your walking speed, you regenerate 2d10 hit points per round, and your attacks deal an additional 2d10 fire damage that ignores resistance and immunity to fire damage. This form lasts for one minute or until you use judgment cut end and once you use it, you cannot use it again until you finish a long or short rest.

Judgement cut end: As an action while in devil trigger form, You slash your foes with such speed that you appear at multiple places at once. All creatures of your choice within 60 feet of your location take 10d10 slashing damage.

Lawn chair: You can willingly produce a plastic lawn chair to sit in when ever you desire.

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

Notes: Bonus: Magic, Weapon Property: Finesse, Chosen Wielder or Demon lord decendant, Teleportation, Damage, Exploration, Combat, Versatile, Sap