Arcane Twin Cannon

Very rare, Siege Weapon 9-Pounder Arcane Cannon
 AC: 18 HP: 45
Cannon Ball. Ranged Weapon Attack: +8 to hit, range 600/2,400 ft.
Hex Blast Mode
 3d10 bludgeoning damage plus an additional 3d10 necrotic damage. The creature must make a DC 15 Wisdom Saving throw or have disadvantage on one stat of the user’s choice. The creature can make the save at the end of its turn and if pass, it is immune to the cannon’s hex effect for 24 hours, but not the damage.
Acid Splash Mode On hit, the target takes 4d10 bludgeoning damage, any creature within a 15ft radius of the target must make a DC 15 Dexterity Saving throw or take 2d10 acid damage. On success, the creature takes half.
16-Pounder Arcane Cannon AC: 21 HP: 90
Cannon Ball. Ranged Weapon Attack: +10 to hit, range 800/3,200 ft.
Hex Blast Mode
 6d10 bludgeoning damage plus an additional 6d10 necrotic damage. The creature must make a DC 19 Wisdom Saving throw or have disadvantage on one stat of the user’s choice. The creature can make the save at the end of its turn and if pass, it is immune to the cannon’s hex effect for 24 hours, but not the damage.
Acid Splash Mode On hit, the target takes 8d10 bludgeoning damage, any creature within a 15ft radius of the target must make a DC 19 Dexterity Saving throw or take 4d10 acid damage. On success, the creature takes half.