Cursed Cannon, as the name suggests, 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 amount of Cursed Energy you possess is based on your class. Some classes use a modifier, such as Charisma or Wisdom.
Your Cursed Energy DC is 8 + your Cursed Energy modifier + your proficiency bonus.
You regain all spent Cursed Energy on a long rest.
Granite Blast
Starting at 1st level, your Cursed Energy output is off the charts, and your technique allows you to output it as 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 level, to 10d8 at 11th level, to 12d8 at 15th level, 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 you would like, but the 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 to reach the peak of Granite Blast. As an action and for 1 Cursed Energy, you charge up the blast. After charging, Granite Blast becomes a 150-foot cone, forcing creatures in it to make a Dexterity saving throw 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 Blasts.