Bag of the Ungod

When the demon of coal and misery arrives, it hauls forth a bag of unwieldy size. An unassuming thing, that bag. Far larger than one can reasonably want, the Bag of the Ungod appears as a massive sack that has large ropes tied to the opening as a way to shut it. Inside of this bag, a realm that is more expansive than one can imagine. It is said the Bag of the Ungod is connected to all Bags of Holding, and that the Ungod is some being that resides somewhere between the spaces in the pocket dimensions.

While you are attuned to the Bag of the Ungod, it becomes a magical weapon that has the Two-handed, Heavy properties and deals 2d10+10 bludgeoning damage on hit. The interior of the bag is an extra-dimensional plane that functions similarly to the Bag of Holding. This item is also considered a large sized creature with an armor class of 18 and 200 hit points. The Bag of the Ungod ceases to function after it reaches 0 hit points but is never destroyed, it regains 1d10 hit points at dawn. It can apply a unique status called Black Lung. While a creature is afflicted by Black Lung they cannot be immune to poison damage or the poisoned condition and any time they would take poison damage they must make a DC 15 Constitution saving throw or be poisoned until the end of their turn. If a target marked with Black Lung starts their turn within darkness, they begin suffocating. Additionally, your grapple range is increased to 30 ft. as the Bag of the Ungod assists you with a strange arm that reaches out, your grapples count as weapon attacks for the purposes of spells and class features, and you gain new options to use while you attempt grapples:

Pull. When you grapple a creature or object, you can replace one of your attacks with Pull, immediately dragging the target 15 ft. towards yourself. If the target is pulled within 5 ft. of you then you may make an attack as a bonus action.

Slam. When you grapple a creature that is in the air or otherwise not currently touching the ground, you can choose to Slam the target by replacing one of your attacks. Immediately dropping the target prone as they hit the ground. They must then make a Strength saving throw DC 20 or take 4d10 bludgeoning damage. Taking half as much on a success.

Snatch. As an action, you can open and swing the Bag of the Ungod in a 30 ft. half circle centered on yourself. Creatures caught in this arc must make a DC 20 Strength saving throw or be taken into the bag where a 100 ft. cube demiplane exists. Creatures within the Demiplane can attempt to escape with a DC 15 Survival check at the start of their turns.

Expunge. When you have creatures within the Bag of the Ungod, you can use an action to release them in a 30 ft. cone centered on yourself. Creatures not inside the bag initially when caught in the path must make a DC 20 Strength saving throw or take 4d10 bludgeoning damage or half as much on a successful save.

Toss. While you have a target grappled, you can use your reaction to force them to make a DC 20 Strength saving throw. On a failure you choose a point within 30 ft. of you and throw the creature to that point. When they impact they explode into a cloud of coal and flame, creating a 20 ft. radius sphere. Creatures within the sphere must make a DC 20 Constitution saving throw or take 2d6 fire damage and 2d6 poison damage, and be marked by Black Lung for 1 minute.

Proficiency with a Maul allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Melee Weapon Attack: Bludgeoning, Bonus: Magic, Damage, Combat, Heavy, Two-Handed, Topple