Embed Guard
Deletes messages that get edited to add or swap in an embed - stops someone posting something clean, then editing in a gore/NSFW link after the fact to get the server mass-reported.
This is a rare/extreme-case protection, not something most servers need to turn on. It exists specifically for servers that get targeted with false termination attempts - a bad actor posts something clean, waits for it to be seen and trusted, then edits in gore/NSFW/illegal content after the fact and mass-reports the server, trying to get Discord's Trust & Safety team to take action against the server or its owner over content that was never actually posted in good faith. If that's not a real concern for your server, you likely don't need this on.
Setup
$embedguard
Also $eg, /embedguard. First run walks through picking a log channel
(optional - it can be cleared later from the same panel) and confirming enable. After that,
$embedguard opens a panel with an On/Off toggle, a log channel picker, and buttons to
add/remove excluded roles.
How it works
Deletes a message the instant editing it introduces an embed that wasn't there before - whether that's a link auto-embedding, or one embed getting swapped for another. Administrators and any excluded role are always exempt. If a log channel is set, a record of the deletion (author, channel, what triggered it, and a content preview) gets posted there.
Also catches edits to messages Pixie doesn't have cached (e.g. sent before a restart) via Discord's raw edit event - it doesn't rely on having seen the original message first.