Base Class: Sorcerer
Your innate magic comes from the forces of raw chaos that underlie the order of creation. Like Wild Magic it is often considered unstable, but there are a small group of beings who can tame the chaos and wield it. In order to end up with access to Chaos magic, one usually has found themselves drawn to magic from birth. Chaos Keepers are born with Chaos in their veins. Through great trauma, strain or the interference from other magical means the Chaos awakens. It is an extremely potent power, pushing the caster and their magic to the limits.
Flood of Chaos
Starting when you choose this origin at 1st level, your spellcasting can unleash floods of magic. Twice per long rest, after you cast a spell of first level or higher that requires you to roll to hit, you can follow that spell up with a second casting of the same spell (this does not use any spell slots or sorcery points). If successful this spell has maximum effect. Dealing maximum damage of which you take half of.
Chaos Bending
Starting at 1st level, you can manipulate the forces of chaos to alter the make up of spells or creatures. You can choose to alter the damage type of any spell you cast or to alter the resistances of any creature targeted with one of your spells. You must finish a long rest before you can use this feature again.
Control the Weave
Starting a sixth level, when another creature you can see makes a spell attack roll or targets a creature with a spell, you can use your reaction and spend 2 sorcery points to roll a D20 and apply your spell casting modifier. If you roll higher than the creatures attack roll or the spell save DC, that creature must choose a new target, causing them to also experience a magical surge. They must make a constitution saving through using your spell save DC or become stunned until the end of your next turn.
Font of Chaos
Starting at 6th Level, you have began to tap into your truly chaotic nature, plucking at the spell weave around you and granting you with additional spells from other classes.
Chaos Shield
At 14th level, you gain a modicum of control over the chaos within you. By spending 4 sorcery points you can cast Counsterspell without spending a spell slot. You also have advantage on all attacks or saving throws relating to magic or magical effects.
Embodiment of Chaos
Beginning at 18th level, the energy within you intensifies. You can choose to spend 5 sorcerer points to become an embodiment of chaos.
For d10 minutes you allow the Chaos to consume you. Your body becomes a beacon for chaotic energy that swirls around you.
You are resistant to all spell damage and any melee attacks made against you are at disadvantage.
The floods of energy around you cause any creature within 5ft of you to require a DEX saving through of your spell save DC, or takes 2d6 force damage, half asmuch on a succesful save.
After your chaotic form comes to an end you can choose to spend 5 more sorcerer points to force any creature within a 20ft radius of you to make a DEX save or take a further 6D6 force damage, half as much on a successful save.
Otherwise, you explode without a modicum of control an you and any creatures within 10ft of you take 6d6 force damage.