Beat 7* Thrawn with this G8 team!

Thanks to this guide/discussion, I managed to unlock 7* Grand Admiral Thrawn.

I was really struggling and becoming frustrated with repeating the battle again and again to no avail. I kept trying different tactics, and this is what worked for me. Hopefully it might be of help to someone else.

Preparation:

• All Phoenix characters were level 85
  
• All Phoenix characters were at Gear 8 (Bare minimum, none were close to Gear 9)
  
• All Phoenix characters had all their Omega ability levels unlocked
  
• I did not have any Zetas (I didn't want to waste them on this team)
  
• For Mods, I used the "auto assign" feature, including assigned Mods, and made sure they were all upgraded to Level 15
  
• I left Kanan out when selecting the squad (an odd choice, as people usually leave out Chopper or Sabine, but it worked)
  

Battle:

I did auto battle basic until the final confrontation

I removed the Stormtrooper's taunt with Ezra

Defeated the Death Troopers

Defeated the Stormtrooper

Focused on Thrawn instead of the two Commandos, using the Phoenix squad's assist abilities to get multiple attacks in a turn (only because every time I left him to deal with last, his counter was too powerful and it would kill my remaining team--having everyone there when I was focusing on him was really helpful to eliminate him quickly)

Finished it off by defeating the Commandos (they didn't do much damage to my characters, which were pretty much on their last legs at the time)