Board Thread:Role Ideas (Mafia)/@comment-39067078-20190408053327/@comment-35051747-20190526161758

(If anyone visits you, the boom will be so loud that they will be notified.

Notification is "A loud boom was heard at your target's house!")

This is like Investigator finding a Juggernaut. It's a dead giveaway to visitors to let them see the message, letting them know that you're a Sniper.