The Inquisition

You are an inquisitor, bound to a religious organisation such as a cult or a church.

This homebrew subclass focuses on using Eldritch Blast in form of a firearm. Pick only one spell for available spell level and try to avoid damaging spells, focus on utility instead.
Agonizing Blast and Repelling Blast are automatically added to your character.

You can pick the "Inquisition Trickshots" feat to get all desired cantrips.

Arcane Trickshots

The Inquisition's training taught you cantrips that serve as arcane trickshots.
Every time you attack with your Eldritch Blast, you may choose to replace the attack with one of the Inquisition Trickshots.

You ignore the range of these cantrips if you pick Eldritch Spear invocation. If not, the higher range from between Eldritch Blast and the cantrip applies.
On hit the target always takes damage and if the cantrip requires a saving throw, it's used to determine whether or not the secondary effect applies.

Marked for Execution

Starting at 1st level, you gain the ability to place a death sentence on someone. As a bonus action, choose one creature you can see within 30 feet of you. For 1 minute you gain the following benefits:

- Any attack roll you make against the marked target is a critical hit on a roll of 19 or 20.

- If the marked target dies, you regain hit points equal to double your warlock level.

You can use this feature once per short rest.

You gain an additional use of this feature at 14th level.

Inquisitive Training

At 1st level, you acquire the training necessary to effectively arm yourself for battle as well knowledge necessary to analize your enemy. You gain proficiency with medium armor, shields, and martial weapons. Also, you have advantage on History and Investigation checks when trying to determine origin of your foe.

Years of training under the Inquisition's watchful eye taught you how to handle yourself in combat as well as knowledge necessary to assess the danger before you.
You gain bonus to damage of your Eldritch Blast equal to your Charisma modifier.
Once on each of your turns when you hit a creature with Eldritch Blast, you can push the creature up to 10 feet away from you in a straight line.

Misfire

Your weapon can misfire whenever you get 1, 2, or 3 on an attack roll. You then cannot use the weapon unless you use either your action or bonus action to repair it.
If you use your bonus action, make an Intelligence or Wisdom check using whichever is the higher.
If you use your action, make an Intelligence or Wisdom check using whichever is the higher and add your proficiency bonus.
On roll of 1 the DC is 20
On roll of 2 the DC is 16
On roll of 3 the DC is 12

If you fail the check, your weapon is unusable until you spend short rest repairing it, therefore you are unable to use trickshots as well as eldritch blast.

Quick Thinking

Reaching 6th level you are quick with coming up with strategies on the fly allowing you to take either Dash, Dodge or Disengage action or to make an attack with number of your Eldritch Blast's beams equal to half your proficiency bonus rounded up as a bonus action number of times equal to your proficiency bonus. You regain all uses of this feature when you finish a short rest.
You can also expend a use of this feature to give yourself advantage on intimidation check.

Whenever you make a Wisdom (Insight) check to determine whether a creature is lying, treat a roll of 6 or lower on the d20 as an 7.

Impending Doom

At 10th level, your mark allows you to invoke your target's inner fear of death. If the target you marked with Marked for Execution hits you with an attack roll, you can use your reaction to roll a d8. On 6 or higher, the attack instead misses you.

Death Sentence

By level 14th you became relentless in hunting your victims. When the target marked by your Marked for Death feature forces you to make a saving throw and you fail, you can choose to succeed instead. You can use this feature twice per long rest.
At 18th level you can use this feature three times per long rest.
Also, you can have two creatures marked at the same time.