You have a +2 bonus to attack and damage rolls made with this magic weapon.

The weapon has a blueish steel blade, and gold detailing on the hilt. a faint amount of blue radiant energy emanates from the blade. Additionally, a mysterious entity by the name Kruux lives within the blade, and can talk only to the individual attuned to the blade.

When a melee attack lands on a target, it must make a CHA saving throw DC 12 (14 in second form,16 in third form) or lose 1 point of its wisdom. When this happens, the user gains 1 charge in the weapon, up to a maximum of 15 charges. Charges reset upon taking a short rest.

At 5 charges, the weapon transforms, becoming larger and more ornate, and deals an additional 1d6 radiant damage. This is considered its second form.

At 10 charges, the user also transforms, gaining a similar blue aura of radiant energy, as well as the faint glow of wings, more exaggerated armor, and blue glowing eyes. The sword now deals an additional 2d6 radiant damage. This is considered the third form.

When at 5 charges or higher, the user gains access to the Divine Grace and Divine Fury weapon features.

Divine Grace. You can spend an action to touch your blade to a willing creature and restore hit points equal to 1d4 per charge. Using this feature uses all charges held in the weapon.

Divine Fury. If you hit a creature with a melee attack on your turn, you can use your bonus action to expend all charges from the blade, dealing 1d6 radiant damage per charge. Using this feature uses all charges held in the weapon.

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, by the creation of a pact with the entity within the sword, Kruux., Damage, Combat, Versatile, Sap