Blackened Heart

 The fragment in your heart acts as an arcane focus, and as a link the the void - a dimension at the end of all.

The Endless Fall

You no longer take fall damage.

Mind of the Lost

You gain these spells at these levels:

1st.    False Life, Blindness/Deafness

3rd.    Phantom steed, Alter Self, Blink

6th.   Etherealness, Eyebite, Seeming

You can cast these spells at will, and they do not count against your sorcerer spells.

 

The Void's Emissary

You may choose to coat certain parts of you with a black, shiny substance, making you stronger than ever before.

Expending 2 sorcerery points, you may turn either your feet black or your eyes. If feet, your movement is increased by 10ft, but if it is your eyes, your darkvision is increased (or made) by 15ft.

Expending 3 sorcerery points, you may turn either your chest black or your fists. If chest, your AC increases by two, but if it is your fists, your strength score increases by 2.

These effects last for 5 minutes, and are concentration.

You may have multiple active at once, if you have enough sorcerery points.

The Black Hammer

Once per long rest, you may create a pure black weapon that you are proficient in. This weapon will return to your hand at the end of a battle round. It does 1d8 + your charisma modifier. It also has the durability of obsidian.

Voided

Expending 1 sorcerery point, you may "flip" yourself. Your skin turns grey, and your eyes turn black. You no longer need to eat, drink or sleep and your "Stealth" and "Intimidation" modifiers rise by 1. This lasts for 48 hours. You may use the metamagic options: "Extended Spell" to double the duration and "Twinned Spell" to use this ability on 1 other willing creature. You may also spend 1 sorcerery point to increase the modifier boost to +2, instead of +1.