Akh'Velahr was the army of Cormanthor around the time of Myth Drannor. The fabled amrathors of the Coronal Guard served as the city's elite protectors, some of whom practiced a unique form of sword magic. Those elves are Bladesingers that master a tradition of wizardry that incorporates swordplay and dance.

In combat, they uses a series of intricate, elegant maneuvers that fend off harm and allow the Akh'Velahr to channel magic into devastating attacks and a cunning defense. Many who have observed a bladesinger at work remember the display as one of the more beautiful experiences in their life, a glorious dance accompanied by a singing blade.

 

Training in War and Song

3rd-level  Akh'Velahr Bladesinging feature

When you adopt this tradition, you gain proficiency with with one type of one-handed melee weapon of your choice that don’t have the Two-Handed or Heavy property. You can use a Melee weapon with which you have proficiency as a Spellcasting Focus for your Wizard spells. You can chose a Fighting Style feat. You also gain proficiency in the Persuasion skill if you don’t already have it.

Bladesong

3rd-level  Akh'Velahr Bladesinging feature

You can invoke an elven magic called the Bladesong, provided that aren’t wearing armor or using a Shield. It graces you with supernatural speed, agility, and focus.

You can use a bonus action to start the Bladesong, which lasts for 1 minute. It ends early if you are incapacitated, if you don't wear any armor or a shield, or if you use two hands to make an attack with a weapon. You can also dismiss the Bladesong at any time (no action required).

While your Bladesong is active, you gain the following benefits:

• Agility. You gain a bonus to your AC equal to your Intelligence modifier (minimum of +1), and your Speed increases by 10 feet.
• Bladework. Whenever you attack with a weapon with which you have proficiency, you can use your Intelligence modifier for the attack and damage rolls instead of using Strength or
  Dexterity.
• Focus. When you make a Constitution saving throw to maintain Concentration, you can add your Intelligence modifier to the total.

You can invoke the Bladesong a number of times equal to your Intelligence modifier (minimum of once), and you regain all expended uses when you finish a Long Rest.

Extra Attack

6th-level Bladesinging feature

You can attack twice, instead of once, whenever you take the Attack action on your turn. Moreover, you can cast one of your cantrips in place of one of those attacks.

Song of Defense

10th-level Bladesinging feature

You can direct your magic to absorb damage while your Bladesong is active. When you take damage, you can use your reaction to expend one spell slot and reduce that damage to you by an amount equal to five times the spell slot’s level.

Song of Victory

14th-level Bladesinging feature

After you cast a spell that has a casting time of an action, you can make one attack with a weapon as a Bonus Action. Moreover, when you’re subjected to a spell or magical effect that allows you to make a saving throw to take only half damage, you instead take no damage if you succeed on the saving throw and only half damage if you fail. You can’t use this benefit if you have the Incapacitated condition.