Razorgore the Untamed Victory in 5m50s

Time Event
00:05:14.262s Balor casts Bloodthirst (Rank 4) on Death Talon Dragonspawn (25)
00:05:16.062s Balor casts Heroic Strike (Rank 9) on Death Talon Dragonspawn (25)
00:05:17.880s Balor casts Cleave (Rank 5) on Death Talon Dragonspawn (25)