Horde Race Picker
The best Horde race for every DPS and tank spec on a boss kill, with the runners-up and how close each call is. Simulated on MythicSim's Rust engine under the client 70707 rules, using MythicSim's own reference build for every spec with its best pair of trinkets (see How it was run).
Fight length
Class
Margins under about 0.3% are ties.
Method and caveats