Imbued with Abjurative magic as an infant, you have enhanced defensive magic and martial prowess.

Arcane Boost

At 1st level, you learn 2 of the following abilities. You learn additional Arcane Boost abilities at levels 5, 9, 13, and 17.
You may only use 1 of these abilities per turn, unless otherwise noted with *.

Distant Attack. When you make a Melee Weapon Attack, you can spend 1 Arcane Charge to increase the reach of one weapon by 5 feet. This effect lasts until the end of the turn.
Empowered Attack. When you roll damage for a Melee Weapon Attack, you can spend 1 Arcane Charge to reroll a number of damage dice up to your Charisma modifier. You must use the new rolls.*
Quickened Attack. You can spend 1 Arcane Charge to make a Melee Weapon Attack as a bonus action.
Seeking Attack. When you make a Melee Weapon Attack and miss, you can spend 1 Arcane Charge to reroll the d20. You must use the new roll.*
Transmuted Attack. When you make a Melee Weapon Attack that deals a type of damage from the following list, you can spend 1 Arcane Charge to change that
damage type to one of the other list types: slashing, piercing, bludgeoning. This effect lasts until the end of the turn.
Twinned Attack. When you make a Melee Weapon Attack, you can spend 1 Arcane Charge to target a second creature within the attack's normal range.

You have a number of arcane charges equal to the number of Arcane Boost abilities you know, and regain all charges at the end of a short or long rest. 
Upon reaching level 2 in the Sorcerer class, you may spend 1 Sorcery Point as a bonus action to regain an Arcane Charge.

 

Abjurant Armor

You naturally maintain a defensive ward around you.
Starting at 1st level, while you are wearing no armor and not wielding a shield, your AC equals 10 + your Dexterity modifier + your Charisma modifier.

Extra Attack

Starting at 6th level, you can make 2 attacks when taking the Attack action.

Modified Abjuration

At 14th level, you learn the Extended Spell Metamagic. If you already have the Extended Spell Metamagic, select another of your choice. 
Metamagic effects used with your Abjuration Spells of 5th level or lower cost 1 less sorcery point, to a minimum of 1 point. 
You may use the Extended Spell metamagic with Abjuration spells that last less than 1 minute. 

Martial Arcanist

Beginning at 18th level, any time you use Metamagic or your Arcane Boost feature, you deal bonus damage on weapon damage rolls equal to your Charisma Modifier until the start of your next turn. This bonus damage may be any type that the weapon deals during the attack.

In addition, you gain the following effects when you are within 10 feet of 1 or more enemies.
Metamagic effects used with any Abjuration Spell cost 1 less sorcery point, to a minimum of 1. 
You may spend Sorcery Points to regain Arcane Charges without using a bonus action.