Warchief W 2: Electric Boogaloo
I've been trying this out after reading about this bug in Discord and I think I figured it out, it's not a 100% consistent because I think you have to be (nearly?) frame perfect with it. Presumably this happens slightly more often with a higher latency, but it is not required and works in practice mode.
If you issue a command to Warchief in the frame(s) after his skill clears his order queue (and before you gain control over his spirit?), Warchief will attempt to complete this action. It does not work if you do it while/too quickly after pressing W, as