Destruction of the Endless

You have been chosen as the recipient of Destruction's blessing. You have been given a physical embodiment of his sigil of a Sword, which becomes a pair of dual single handed weapons that you can summon from and dispel to the realm of Destruction. You can choose what the weapons that you receive are each time you summon them.
Your gift allows you to channel energy from the Destruction's realm through yourself and your weapons, in order to imbue your attacks with Chaotic and Destructive energy.

Put em together, and they destroy

Starting 3rd level, Destruction has granted you the ability to use you connection to his realm to summon a pair of single handed melee weapons made of Chaos energy as an action.
You can summon a single weapon as a bonus action instead and spend a bonus action on a future turn to summon the second one.
They are stored in the realm of Destruction if they leave your hand for 10 seconds, or you choose to dispel one or both of them as a bonus ​action.

You can choose the form that these weapons take every time you create them, and they do not need to be the same

Chaos Rage

Starting 3rd level, your connection to the realm of Destruction allows you to channel its energy through your body and summoned weapons to wreak havoc.

You choose elements from the following list to unlock at the listed levels:

3rd: Fire, Cold, Thunder, Poison
6th: Acid, Lightning
10th: Radiant, Necrotic

Each of these elements has a different related ability.

Whenever you enter a rage while holding one or both of your Chaos Weapons, you can enter a "Chaos Rage"; you choose an element type from your list of unlocked elements, granting you one use of its related ability while raging. You unlock 2 elements at 3rd, then an additional one at levels 6, 10 and 14.
While you are in this Chaos Rage, you gain resistance to this damage type and any Rage Damage you deal with these weapons is of the damage type you chose.

When you leave this rage you suffer 2 levels of exhaustion and your Chaos Weapons go back to their realm until you summon them again.

Your spellcasting modifier is CON

Acid

When you enter a Chaos Rage, you can choose Acid as the element you channel.
Corrosive liquid drips from your arms and weapons, bleeding from your eyes and coating your blade.

Related ability: when you activate it, for 1 turn whenever you use an attack you cast the Acid Splash spell and fling the acid from the tips of your weapons before the attack lands.

Cold

When you Chaos Rage, you can choose Cold as the element that you channel,
Ice burns in your eyes and spreads across your features, freezing those that you would choose to.

Related ability: When you hit an enemy you can make them roll a DEX save against being encased in ice until the end of your next turn.

Fire

When you Chaos Rage, you can choose fire as the element that you channel,
Flames wrap around your arms, torso and weapons; spreading to and burning those that are unfortunate enough to feel your blade.

Related Ability: you can cast the spell burning hands once in this Chaos Rage.

Lightning

When you Chaos Rage, you can choose Lightning as the element you channel.
Sparks crackle and arc out from your skin; your eyes a ball of electricity and your weapons a lightning rod.

Related ability: you can cast Call Lightning once in this Chaos Rage.

Necrotic

When you enter a Chaos Rage, you can choose Necrotic as the element you channel.
You absorb darkness into your skin from the world around you; your eyes black and empty.

Related ability: you can imbue every attack on this turn with necrotic energy, dealing 3d8 necrotic damage and causing the target's tendons to atrophy; the target rolls a CON save, on a fail the target takes damage equal to your rage damage for each 5ft they move.

Poison

When you enter a Chaos Rage, you can choose Poison as the element you channel.
An aura of sickness protrudes from your body, poisoning the space around you and empowering your attacks.

Related ability: once in this Chaos Rage, you trade every attack you make on your action for a use of the Ray of Sickness spell, emanating from the tip of your weapon.

A ray of sickening greenish energy lashes out toward a creature within range. Make a ranged weapon attack against the target. On a hit, the target takes 2d8 poison damage and must make a Constitution saving throw. On a failed save, it is also poisoned until the end of your next turn

Radiant

When you enter a Chaos Rage, you can choose Radiant as the element you channel.
Light emanates from within your body, imbuing your strikes with a Holy Power of Destruction.

Related ability: once per Chaos Rage you can imbue every attack you make this turn with the effects of Blinding Smite: the blindness lasts until the end of your Chaos Rage.
Your weapon flares with a bright light, and the attack deals an extra 3d8 radiant damage to the target. Additionally, the target must succeed on a Constitution saving throw or be blinded until your Chaos Rage ends

Thunder

You can choose Thunder as the element you channel in a Chaos Rage.
Dark air swirls around you, the wind picking up leaves and dust, imbuing your strikes with additional force.

Related ability: You can cast Thunderwave once in this Chaos Rage.

Bringer of Destruction

Starting 6th level, Your ability to channel the powers of Destruction through your attacks grows strong enough that you can bring Destruction in its many forms to many people around you at once.

While you are in a Chaos Rage, any Rage Damage you deal to an enemy is also dealt to any other hostiles within 5ft of the target of the attack.
Additionally, when you make an unarmed strike, the Rage Damage dealt is doubled against the target of the attack.

Additionally, your Chaos Weapons gain a +1 to attack and damage rolls, and a +1 bonus to your Rage Damage bonus.

Finally, while raging you can have your Chaos Weapons return to your hands at the end of each of your turns.

Chaos Control

Starting 10th level, your power over the realm of Destruction increases your control over your Chaos weapons.

You can now summon them back to your hand at the end of your turns when not Raging; you can also summon your Chaos Weapons back to your hands as a reaction on your turn (but not on someone else's), and summoning them back when in a Chaos Rage causes a small explosion of your chosen element type. This explosion deals damage equal to your rage damage bonus to every enemy within 5ft of you

Also, you can use your bonus action to teleport to one of your Chaos Weapons that is within 30ft of you; if you are in a Chaos Rage when you use this feature then you appear with an explosion in the same way as above.

Destructive Aura

Starting 14th level, you are so in tune with the realm of Destruction that you embody the havoc that you wreak.
When you enter a Chaos Rage, can now choose 2 elements to channel; you are also resistant to magical bludgeoning, slashing and piercing damage.
Whenever you deal Rage Damage, you now deal double as you deal it once from each element; and you get a use of both element's abilities. (When making an unarmed strike, the Rage Damage becomes triple against the target of the attack)

Additionally, while in a Chaos Rage you can teleport to your Chaos Weapon as a reaction at any point on your turn (but not on someone else's).