Soul of the Cursed

Power is out there for you to grasp.  You just have to reach out and draw it to yourself.  A soul of the cursed sorcerer can draw on the power of others but at a cost to themselves.

Weave Knowledge

Your link to the arcane gives you innate knowledge of spells and spell-like abilities. You have advantage on arcana checks.  When your Spellcasting feature lets you learn or replace a sorcerer cantrip or a sorcerer spell of 1st level or higher, you can choose the new spell from the sorcerer spell list. You must otherwise obey all the restrictions for selecting the spell.

In addition, you can expend 2 sorcery points to cast detect magic without expending a spell slot. It lasts the duration of the spell.

Essence Drain

Whenever you roll initiative you can choose to expend a sorcery point to target one creature up to 30 feet away. The target takes half of 1d4 reduction in armor class. Your Armor Class increase and your hit point maximum decreases by the roll.  The armor class effects of this ability last up to a minute. The hitpoint reduction lasts until you finish a long rest. You can use this equal to your proficiency bonus and regain all uses after a long rest.

Amplified Arcane

Starting at level 6 When you cast a spell you can use your reaction to draw power around you.  Any creatures in a 5-foot radius take 1d6 necrotic damage.  You can add the cumulative roll as necrotic damage to your spell.  You can use this ability equal to your charisma modifier.  Regain all uses after a long rest.

Protection of the Weave

Starting at level 14 while under your Essence Drain when you're subject to a magical area of effect you can add half your arcane roll to your saving throw. You can use this a number of times equal to your charisma modifier.

Arcane Vampirisim

Beginning at 18th level, you can Pull and rip the magical power from others away and devour it into your own. While under Essence Drain you can use an action to steal a number of spell slots equal to half the roll. If you use this ability on a creature that does not have spell slots or innate spell casting, nothing happens.