Magic Thief

You gain dark powers along with standard rogue abilities.

Thiefs pet

You gain find familiar as an at will spell at no cost.

Your familiar can have a fly speed.

Additionally, when you take the Attack action, you can forgo one of your own attacks to allow your familiar to make one attack with its reaction.

You gain the Investment of the Chain Master eldritch invocation.

Mystic Assassin

you gain the ability to sneak attack with non AOE cantrips.

Sneaky Familiar

So long as your familiar is within 30 feet of you you can cast ranged spells from your familiars position.

Entwined souls

As long as you are within 200 feet of your familiar you can magically swap positions with them once per short rest.

Roguish Arcanum

You gain the ability to cast a 9th level spell of your choice once per long rest.

you can change which spell you cast with this feature during a short or long rest.