Catastrophe

You wield the raw power of chaos and destruction, unleashing catastrophic events upon the battlefield. Your magic is unpredictable and volatile, causing destruction and mayhem.

Catastrophic Magic

Catastrophic Magic: When you cast a spell, roll a d20. On a 1, the spell has an unintended consequence (DM's choice).

Destructive Instinct: You gain proficiency in Intimidation.

Chaos Burst

When you cast a spell, you can choose to release a burst of chaotic energy, dealing 1d6 force damage to all creatures within 10 feet. You can use this feature a number of times equal to half your total spell slots (rounded down).

Cataclysmic Event

Once per day, you can unleash a cataclysmic event, causing a random effect (DM's choice, e.g., earthquake, storm, or explosion). 

At level 20, able to use twice per day.

Apocalyptic

You can make a spell apocalyptic twice per long rest or once per short rest, increasing its damage by 50% and causing all creatures within the area to make a DC 15 Constitution saving throw or become stunned for 1 minute. You regain all uses of this feature after a long rest.