Cursed Canon, as the name says, allows you to unleash blasts of cursed energy. As simple as it is, its power is undeniable.
Cursed Energy
Starting at 1st level, you can harness your negative feelings into a usable source of energy, called cursed energy. These feelings can be harnessed into attacks or abilities. The number of cursed energy you possess is based on your class, some classes use a modifier that being Charisma or Wisdom.
Your cursed energy DC is 8 + CE modifier + proficiency bonus.
You regain all spent cursed energy on a long rest.
Granite Blast
Starting at 1st level, your CE output is off the charts, and thanks to your technique allowing you to output it in a destructive death ray. As an action, you can spend 1 cursed energy to release a beam of cursed energy. Make a ranged cursed energy attack roll with a range of 150/600 feet. On a hit, it deals 3d8 force damage.
Beginning at 3rd level, the damage increases to 6d8, to 8d8 at 6th, to 10d8 at 11th, to 12d8 at 15th, and to 12d10 at 18th level.
Grape Shot
At 3rd level, your versatility with your blasts has increased. For 1 extra cursed energy, you may split your Granite Blast into however many blasts as you would like, however damage dice are spread evenly between blasts.
Guided Shell
Beginning at 6th level, your shots are malleable and extremely difficult to avoid. Once per attack, you may choose to expend up to 5 cursed energy points to add to the attack roll.
Nuclear Shell
Once you reach 11th level, you have managed the peak of Granite Blast. As an action, you may charge up the blast by using using 1 cursed energy and an action. After charging Granite Blast becomes a 150ft cone, forcing creatures in it to make a Dexterity Save against your Cursed Energy DC, on a failure the creature takes your current Granite Blast damage plus an additional amount of dice equal to your Cursed Energy modifier.
Domain Expansion: Shooting Range
Finally, at 18th level, you have honed your technique to the maximum, gaining your domain expansion. While inside it, at Initiative 20, you may choose up to three targets to suffer the full effects of three Granite Blast.