The machine

your patron is a great machine of some sort  

calculating action

Starting at 1st level,you can use the ready action as a bonus 

machine mark

Starting at 6th level,when you hit someone a with a warlock spell you can mechanically mark them until the end of your next turn whiled marked in this way you have advantage on attack rolls against them and when they move they can move at half speed or use all their movement to move in a direction of your choice 

gear grind

Starting at 10th level, as a action you can deal 1d6 blungeiong  damage to 1 target and machine mark them 

the great machine

Starting at 14th level,you can a action to summon the great machine choose a number of creatures up to your prof+charisma mod in 30ft each creature must make a strength save or take 3d6 blungeiong damage and 2d6 lighting damage and be machine marked on a success they take half damage but are still machine marked you can use this once per short or long rest and regain a use by spending a combined total of 2 spell levels and have more uses if you spend more