History of Bring the Dawn

Bring the Dawn is a medal triumph: instantly eliminate the entire opposing team without help from teammates, in the Crucible. The objective counts medals earned.

Practically this means a single Super or explosive ability wiping the whole enemy team at once, which works best in modes with small teams. Destinypedia and the D2 wiki medal lists do not include this medal, so the exact trigger, seal and any reward are unconfirmed.