Totem Alert

Quite self explanatory.

You can use this datapack for Hardcore servers or PvP minigames, or for simply having it in your SMP to improve chat interaction. The choice is yours.

In case of a hardcore server, it is highly recommended that you use it together with my other datapack Death Announcement, that does a similar thing but announcing in the screen when any player dies in the server, giving a dramatic tone to these events.