ancient sparrow
Pinging owner isnt a good idea
#useless tbh
thorn stream
it isn't an amazing counter, but HMg builds on siren and harpy work better against dux than most other builds will. Their reflectors punish dux users that choose to still fire at them in the ability, and using the shiledbreaker pilot + quantum radar gives you the chance to do a lot of damage to them. If you manage to lock them down with paralysis, you've got a golden opportunity to take it down, or at least take it below 50% to get rid of deft survivor. Alternatively, you can run gauss Crisis / Pathfinder weber, to surprise it and deal a ton of damage through the shield. Reflecting titans also help to keep it out of your spawn. Minos or Luchador can work. You really need to have two or more players corner it to kill it though, and good luck finding coordinated players in a random match.
winged needle
Don't ping staff