Star Rage

The Star Rage cursed technique allows its user to increase its virtual mass by using its cursed energy, making short work of opponents by crushing them with their weight.

Black Hole

Despite your technique being an all powerful tool, you know there is a limit to your powers. If you add more than 20 virtual mass increases, you create a black hole centered on yourself, forcing every creature in a 60 foot-radius centered on you to make a Strength saving throw with disadvantage. On a failed save, the creature takes 100d1000 force damage and is pulled to within 5 feet of the black hole. This saving throw repeats at the start of a creature’s turn while the black hole is active. All damage and conditions from the black hole ignore any resistances and immunities to it. On a successful save, the creature takes half as much damage and is knocked prone but isn’t pulled toward the black hole. The black hole lasts for 1 minute.
A creature that’s within 5 feet of the black hole at the start of its turn must make a successful Strength saving throw or take 50d1000 force damage and have its speed reduced to 0 until the start of its next turn. On a success, the creature takes half damage and has its speed reduced to 0 until the start of its next turn. A creature that’s within 60 feet of the black hole (but not within 5 feet of it) at the end of its turn takes 30d8 cold damage. A creature reduced to 0 hit points while within 5 feet of the black hole dies immediately.
You are killed outright, but the black hole continues.
All objects and structures within 120 feet of the black hole take the damage, and the ground in this area becomes difficult terrain. Any objects or structures within 60 feet of the black hole are immediately destroyed.
The range and radius of any effect caused by the black hole double at the end of what would have been your turn.

Star Rage

Your technique allows yourself to increase your own virtual mass. As a bonus action for an amount of Cursed Energy up to your Charisma modifier (minimum of 1), you may increase your virtual mass around your body by the amount of cursed energy spent for a number of rounds equal to your Charisma modifier added twice (minimum of 2).
You gain the following benefits for the duration depending on how much mass you have added:
Mass Impact: At one mass increase, whenever you roll a critical with an unarmed strike the target must succeed a Strength saving throw or be knocked prone. At three mass increases, whenever you land a critical hit on a creature with an unarmed strike the creature must make a Strength saving throw or be knocked back a number of feet equal to 10 times your Strength modifier. If the creature collides with an unsecured object or structure, then the creature and the unsecured object or structure receive 1d6 bludgeoning damage for every 10 feet the creature had traveled after colliding with the surface. If it was another creature, they instead both take damage equal to half of your damage roll (rounded down). If this attack would already knock the creature back the knock back will be increased by 10 times your Strength modifier feet, additionally if you hit an object or structure with an unarmed strike the damage the object or structure takes is doubled. At seven mass increases whenever you destroy an object or structure it will create a cone in which all creatures will be heavily obscured in debris equal to ten times your Strength modifier feet long. Alternatively you may punch the ground and create a circle with a radius of half your Strength modifier times ten feet that lasts until the end of your turn. All creatures will be heavily obscured in debris equal to ten times your Strength modifier feet.

Increased Damage

Your unarmed strikes damage roll receive a +10 for every two mass increases you receive.

Grappler

For every two mass increases you receive you’ll count as one size larger for grapples. This stops once you start counting as Gargantuan.
You can only activate this technique again after the full duration has passed.

Increased Strength

At level 6, Your mass increases your overall strength instead of just your strikes. When you are at five mass increases, you have advantage on Strength checks and saving throws. For every five mass increases after, you gain a +1 in these checks and saving throws.
Additionally, you now deal twice as much damage to objects and structures while you are benefiting from Star Rage.