Voidwielder

Within you dwells a drop of pure elemental void, connecting you to the dark nothingness, and cosmic darkness. How did you gain this power over the elemental void? Did you inexplicably enter plane of Vacuum, awakening in the debt of an evil Brilsur, or did you drink from a stream of voidwater in the Underdark, awakening your power?

Corrosive Magic

At 1st level, you learn the chill touch cantrip, but it doesn't count against your number of Cantrips Known. When you hit a creature with chill touch, it cannot take reactions until the start of your next turn.

Entropic Touch

Starting at 1st level, you can draw upon the Void to destroy one Tiny or smaller object that you touch. The item must be non-magical, and cannot be one that is being worn or carried.

The item remains destroyed for as long as you concentrate on this ability, as if concentrating on a spell. If you maintain concentration for 1 hour, the object is permanently destroyed. If you loose your concentration, the object reappears in an unoccupied space as close as possible to its last location.

You can use this feature once without expending a spell slot, and can't do so again until you finish a long rest, unless you expend a spell slot of 1st-level or higher to use it again.

The size of the non-magical item you can destroy with this feature increases as you gain levels in this class: at 6th level (Medium), 11th level (Large), and 17th level (Huge).

Negate Spell

Your connection to the Void allows you to undo arcane magic. Beginning at 6th level, when you cast counterspell or dispel magic you can spend 1 sorcery point to grant yourself advantage on any roll the spell requires you to make.

Disciple of the Void

Starting at 14th level, you can use your Entropic Touch an unlimited amount of times without expending a spell slot.

Ray of Annihilation

Your power allows you to unmake creation. At 18th level, you learn the disintegrate spell, but it doesn't count against your number of Spells Known.