Silentban
From xat wiki
(SILENTBAN) - Silently ban users
Silentban allows tempowners and above to silently ban a user in their chat. This means that the user being banned will not see themselves being banned, similar to the Mute power. In addition, no one else in the chat will be able to see the ban taking place. To prevent abuse, silent bans will still appear in events.
Note: You must own the Mute power to use this power.