Agmin, the Divided Blade

As you gain levels, the properties of this sword increase. 

Chaotic aligned characters attempting to attune to Agmin must succeed a DC 18 Wis saving throw or take a d4 equal to it's hit dice. It is also knocked prone on a fail. Successful attunement results in visions from Alim.

This blade counts as your arcane focus or holy symbol.

When concentrating on a spell, Agmin gains bonus damage equal to the level of the concentrated spell.

This weapon deals an additional 2d4 lightning damage.

If you fail a concentration check, You may choose to pass it instead. This ability may be used a number of times equal to your spellcasting modifier (minimum of 1) and recharges at the end of a long rest.

As a free action you may grant yourself advantage on attack rolls, ability checks and saving throws, and all attacks against you have disadvantage until the end of your next turn. This ability cannot be used again until you finish a short or long rest.

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

Notes: Damage: Melee Weapon Attacks, Bonus: Spell Attacks, Bonus: Spell Save DC, Bonus: Magic, Damage: Lightning, Versatile, Sap