Soul Corruptor (Rogue Variant)

Among tieflings, some are blessed with such power from their ancestral demonic deities that they can pull the very souls of slain creatures to obey their every whim. While most mistake these blessed ones as necromancers, Soul Corruptors tend to favor combat alongside their imprisoned minions, thus gaining skills in the arts of stealth and violence. 

Soul Corruption

At 3rd level, you can attempt to corrupt the soul of a creature, bending it to your will and manipulating it as you see fit.

When you are within 5 feet of a creature that has died within one minute, you can use an action to attempt to corrupt its soul as long as it is not undead or a construct. Roll a d20 and compare it to the challenge rating of the creature. If the roll is lower, the creature's soul moves on and you can no longer attempt this action on that creature. If the roll is higher, you can add it to your collection stored within your shadow. You can collect up to five souls in this way, and you can replace them with any new souls you collect. These corrupted souls have a number of features and restrictions:

• As an action, you can summon the corrupted soul of a creature that you have previously collected with the Corrupt Soul action in an unoccupied space within 30 feet for one minute. You can only summon one soul at a time, but you can use this feature up to a number of times per long rest equal to your proficiency bonus. The creature keeps all of the stats and abilities that it had in life, but its hit points are replaced by a number equal to four times your Rogue level.
• In combat, the corrupted soul shares your initiative count, but it takes its turn immediately after yours. It can move and use its reaction on its own, but the only action it takes on its turn is the Dodge action, unless you take a bonus action on your turn to command it to take another action. That action can be one in its stat block or some other action.
• If the corrupted soul is reduced to zero hit points, it disappears and cannot be re-summoned for 1d4 hours. 
• If you are incapacitated, the soul loses control of itself and uses its turns to attack the nearest creature with one of its actions. If there is no target, the soul sits still and remains inert.

Infernal Chains

As your ability to command souls grows, few of them are able to resist your call.

At 9th level, when you use the Corrupt Soul action, you can roll an extra d20 and take the higher number. Additionally, when you would take damage from a source that you can see, you can use your reaction to swap physical locations with your corrupted soul, transferring whatever damage you would have taken to the soul.

Siphon Shade

At 13th level, you are able to personally harness the abilities of the souls you have corrupted, providing you with supernatural benefits.

Once per short rest, when you would make an ability check or saving throw, you can use the base ability stat (and its modifiers) of one of your corrupted souls in place of your own for that check. Additionally, when you use the Corrupt Soul action, you can choose to give yourself levels of exhaustion, adding +1 to the roll for each point of exhaustion gained.

Metaphysical Domination

At 17th level, your connection to the infernal deities is so powerful that you are able to command two corrupted souls at once.

When you use your action to summon a corrupted soul, you can expend another charge and summon an additional soul so long as their combined challenge rating does not exceed your rogue level. The second creature must be commanded by spending your reaction on your turn. Additionally, you can use your Siphon Shade ability twice per short rest.