Bladesinger

Bladesingers are elven wizards who master a tradition of wizardry that incorporates swordplay and dance. Originally created by the high elves, this tradition has been adopted by other sorts of elves, but has been kept secret outside of their communities for the most part. Some rare half-elves know this tradition, but this is typically frowned upon by elves.
In combat, a bladesinger uses a series of intricate, elegant maneuvers that fend off harm and allow a bladesinger 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 most beautiful experiences in their life, a glorious dance accompanied by a singing blade.

Restriction

The tradition of bladesinging is kept secret, and so only Elves may become bladesingers.

Forbidden Schools

1st-Level Wizard (Bladesinger) Feature
As a bladesinger, you are barred from conjuration and necromancy magic. As such, you cannot learn or cast spells of these schools. Alternatively, you can choose three spell schools which are considered your forbidden schools. You cannot choose universal magic as a forbidden school.

Training in War and Song

1st-Level Wizard (Bladesinger) Feature
You gain proficiency with one type of one-handed melee weapon of your choice, and with the Performance skill.

Bladesong

1st-Level Wizard (Bladesinger) Feature
You can invoke an elven magic called the Bladesong, provided you 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 armor or a shield, if you use two hands to make an attack with a weapon, or if you are otherwise unable to cast or concentrate on spells. You can also dismiss the Bladesong at any time (no action required).
While your Bladesong is active, you gain the following benefits:

• You can calculate your AC using your Intelligence modifier rather than your Dexterity.
• Your walking speed increases by 10 feet.
• You have advantage on Dexterity (Acrobatics) checks.
• You gain a bonus to any Constitution saving throw you make to maintain your concentration on a spell. The bonus equals your Intelligence modifier (minimum of +1).
• You treat any one-handed melee weapon you are holding as though it has the Finesse property.

Extra Attack

6th-Level Wizard (Bladesinger) 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 Wizard (Bladesinger) Feature
You can direct your magic to absorb damage while your Bladesong is active. Whenever you take damage, you can use your reaction to expend one spell slot and reduce the damage to you by an amount equal to five times the spell slot’s level.

Song of Victory

14th-Level Wizard (Bladesinger) Feature
You can add your Intelligence modifier (minimum of +1) to the damage of your melee weapon attacks while your Bladesong is active.