The options for /emoji steal, which copies custom emojis and stickers into your server. Running it requires Administrator, Create Server Expressions or Manage Server. For how the browser works, see the emoji stealer overview.
/emoji steal (Shortcut: steal)
Finds custom emojis and stickers in the emoji value and in the message you replied to, then opens a browser so you can steal them one by one, or steals everything at once with --all.
emojistringOne or more custom emojis to steal, pasted directly. Space-separated for more than one.
allbooleanSkip the browser and steal every found item immediately, each as its native kind.
/emoji steal emoji:<:vibing:1091234567890123456> opens the browser with that one emoji queued, Steal as Emoji or Steal as Sticker to pick which. Reply to a message full of reactions and run /emoji steal all:True instead to skip the browser and add every emoji on it to your server in one go.