Deal with the demonic

You make a deal with the devil chanting the verse: Through the heart of a beast and the skull of the weak I cast a creature both (Nice/Mean your choice) and weak fearless and fatherless this creature has a will of its own and shall die by the hands of an enemy alone for life and death shall do us part your end will be met once struck through the heart within 10 years your end must be met and you shall then repent I place this curse upon you for your fate alone is mine to choose.

The final step: Once the verse is complete a demonic circle will appear on the ground the bloody scroll will burn to ashes the heart will begin to beat and the skull will begin to glow then the ashes, heart, and skull will begin to float towards the circle phasing through anything on the way towards the circle and they will swirl wildly and the voice of a demonic creature will speak to you asking you for something of value in exchange for it to create the life of your creature (e.g all of your gold has to be more than 10,000 gold a legendary wondrous item or 10 souls. When choosing souls the demon will place a spell on you that cannot be detected by anything this spell will capture the soul of any creature you kill within it goblin soul or higher the spell is like a cup that once filled can be returned to the demon and each time you chose souls the cost of souls increases by 5.

Creature stats: The spell is a ritual and for every 2 levels added to the spell the stats of the created creature is +5 at level 2 and below it has no stats and is dead upon being created starting at level 3 the creature has 5 to every stat which increases to 10 at level 5 then 15 at level 7 and finally 20 at level 9 the creature has a will of its own but you can command it to do things and it will do it no matter what it cannot have proficiency or expertise in anything (e.g weapons, skills, armor, tools, or even languages it can only speak the languages of the creature who's skull was used in the ritual)

How to kill it: There are only three ways to kill the creature. 1 Only the demon who you made a deal with can dispel the created creature. 2 The creature is struck through the heart. 3 The creature is smitten by something holy. The creature takes no elemental damage it has no hit points and can only be killed through smite or being struck through the heart when it looses its limbs the only way for it to regain the limbs is through once again contacting the demon

Recontacting the demon: You need to create another blood soaked blank scroll coated in the blood of whoever wants to contact the demon anyone can contact the demon as long as the original caster allows them to you need to then make it an offer a part for a part e.g if the created creature looses its head the demon will require the head of the creature who took the head of the created creature the same applies to any other part but when the heart is destroyed the created creature cannot be brought back as the same creature if the part of the enemy that took the part of your creature cannot be reclaimed and offered to the demon you instead need to offer 5 corpses when contacting the demon to regain the part this is only if the part cannot be reclaimed if it can than offering 5 corpses isn't an option.

Attacking: The created creature can attack anything but it rolls with disadvantage it can use any weapon that the caster can use but it cannot use any form of magic even if a weapon has magic infused into it.