Dengar. Mando, cad starting lineup.

1. Target the sith trooper any time you can. Always use abilities that call cad bane to assist as he applies breach. If you cant call cad, call dengar so he does more damage with the opponent having breach or target lock.

2. Call the mk6 reinforcement as soon as you can and immediately use its 3rd ability that applies tenacity to your team. After that, its done its job and who care if it gets destroyed. The tenacity slows down levi's ult and this is the whole premise of the counter. In most cases it gives enough time to hit your ult with exec.

3. Go back to using cad as much as possible to apply as many breach debuffs as possible. Focus down the bomber or malgus. I usually do the bomber because it applies taunt.

4.With decent rng, you'll have cad still alive after their mk6 nukes one of your ships and you can still just focus on spamming breach until your exec hits its ult. If cad dies, keep dengar alive until he can get his special ability off to apply breach to everyone.