You come into possession of a magic item that through attunement imbues you with strange powers

Expanded Spell List

The Anomalous object lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Spell level	Spells
1st	entangle, detect magic
2nd	crown of madness, phantasmal force
3rd	speak with plants, hunger of hadar
4th	arcane eye, compulsion
5th	dream, skill empowerment

Anomalous Object

At level 1 you choose an common or uncommon magic item that you must attune to to use as an arcane focus

Anomalous spellcasting

At level 1 you can choose to double the effectiveness of a spell (range, damage, area of effect, or disadvantage on saving throw) and roll on the arcane anomaly list. The effect takes place after the spell is cast

Arcane anomaly

1d6

1	gravity in a 30ft radius around you is reversed until the end of your next turn
2	you are teleported 30ft in a random direction
3	you take damage equal to half of your total health
4	you are polymorphed into a creature of your choice with a 1/4 cr until the end of your next turn
5	you are teleported to a harmless demiplane until the end of your next turn
6	you and every creature within 30ft if you have the haste spell cast on them at 3rd level

Unnatural attack

At 6th level as a bonus action after a spell attack or an attack using your anomalous object you can choose to give your target a condition until the end of your next turn. The condition cannot be grappled, restrained, or unconscious. You can do this an amount of times equal to your charisma mod per short rest

Advanced anomalous properties

At 10th level your anomalous object gains the properties of a rare or very rare magic item of the same type

Shifting Item

At 14th level you may choose to change your anomalous object to another random magic item of very rare or lower rarity. The item reverts to its original form after an hour. This can be done a number of times equal to your charisma modifier per long rest.