Initiate the timer with /wipe. Timer will announce to raid or party every 30s, and will end when you enter combat. It's pretty featureless (you can't configure output channel, and you can't cancel the timer, for example) at the moment, but I'll rectify those things eventually.
- Automatic wipe detection (when all main tanks are dead)
- Announce timer configuration (from a static 30s to a configurable time)
- Ability to cancel the timer (for now, you can /console reloadui)
- Channel output configuration
Curse: wipe - Addons - Curse