Prerequisite: 5th level, Pact of the Blade feature
Once per turn when you hit a creature with your pact weapon, you can expend a warlock spell slot to deal an extra 1d8 force damage to the target, plus another 1d8 per level of the spell slot, and you can knock the target prone if it is Huge or smaller.
Prerequisite: 5th level
As a bonus action, you can surround yourself with a magical aura that looks like buzzing flies. The aura extends 5 feet from you in every direction, but not through total cover. It lasts until you're incapacitated or you dismiss it as a bonus action.
The aura grants you advantage on Charisma (Intimidation) checks but disadvantage on all other Charisma checks. Any other creature that starts its turn in the aura takes poison damage equal to your Charisma modifier (minimum of 0 damage).
Once you use this invocation, you can't use it again until you finish a short or long rest.
Prerequisite: 12th level, Pact of the Talisman feature
While someone else is wearing your talisman, you can use your action to teleport to the unoccupied space closest to them, provided the two of you are on the same plane of existence. The wearer of your talisman can do the same thing, using their action to teleport to you. The teleportation can be used a number of times equal to your proficiency bonus, and all expended uses are restored when you finish a long rest.
Prerequisite: Pact of the Tome feature
You no longer need to sleep and can't be forced to sleep by any means. To gain the benefits of a long rest, you can spend all 8 hours doing light activity, such as reading your Book of Shadows and keeping watch.