Enchanted 130mm Cannon's Ring of Silence

"WHAT IN THE NAME OF YOUR GOD WAS THAT?" The Apprentice Artificer struggled to her feet with blood dripping from her ears. "That, my apprentice, was the might of the Ancient Artificers." "WHAT?" The Master Artificer looked on with pride. "It seems we'll need to have that Ring of Silence commissioned after all" "WHAT?" Giving her a stern look the Master Artificer wrote her a note "Be sure to gather measurements and meet with the local Master of Mages to imbue it with the Silence spell... and be sure to take a stop by the infirmary too." Holding her head the apprentice walked off with the note. The Ring of Silence was an immediate need upon firing the ancient cannon.
"Well of course the ring will need to be made!" Said the Master of Mages. "I could have told you that from the beginning!" Glaring at him the Apprentice shot back "Well then why in Elminster's left..." Sighing heavily "Why didn't you tell me?" Smiling coyly the old Mage responded "I just wanted you to experience the awesome explosive deafness of a 130mm cannon for yourself." For the first time since it had been recovered from the crazed old Artificer, the cannon had finally been fired, and now it needed to be silenced.

This ring was designed and crafted specifically for the Ancient Enchanted 130mm Tank Cannon. It was decidedly necessary as it was not only deafening to those around it but it seemed to cause those who fired it to go deaf after one or two shots. Not to mention the local townsfolk almost rioted over the commotion and the on staff Field Clerics ran out of healing and restoration spells in a single day. At this rate, further testing wouldn't be able to progress without more setbacks than results. Though the Ring of Silence was designed primarily for the ancient tank cannon, (with DM's approval) it can be modified with appropriate checks to fit any cannon or firearm and even be adjusted to only effect the cannon/firearm itself instead of a 20ft Radius Sphere. Talk to your DM about adding this to a weapon for sneak attack or advantage as well.

Range/Area: 20 ft Radius Sphere
Duration: Constant
School: Illusion
Attack/Save: None
Damage/Effect: Control

No sound can be created within or pass through a 20-foot-radius sphere centered on the ring. Any creature or object entirely inside the sphere is immune to thunder damage, and creatures are deafened while entirely inside it. Casting a spell that includes a verbal component is impossible there.