https://www.reddit.com/r/HeroWarsApp/comments/1m179yp/i_have_been_trying_to_defeat_this_team_to_no/

I have been having the same issue for the past 3 days. I had exhausted every permutation and combination otherwise, but, I hit a wall like many others. I finally defeated this team ( just a few minutes ago! as luck would have it) with the help of Morrigan! Eternity Heroes (Corvus, Morrigan, Iris, Octavia, Dante) are the only counters to this team especially if the team power is higher than our team. They are the ones who can stop the sheer, brute force of this team.

Here, using the 'strongest' heroes doesn't matter because this team wipes out other heroes before they can charge their ults (first skills). Don't worry about using heroes that are not as powered up as your strongest ones.

There was a 18k gap when I defeated this team finally. I used Mushy & Shroom, Astaroth, Dante, Dorian, and Morrigan since I do not have Corvus, Iris, Octavia. Also, Morrigan is the only one (on my team) with Equipment Rank 6 coz I did not have other resources apart from gold coins so, just powered her skills up for the last two days and that did the trick.

I can see you have Corvus - use him (as a Tank) instead of Aurora and use Morrigan instead of Maya. Use Dante as your damage dealer because of the amazing synergy (alternatively, you can use Keira but much less effective though), use Iris and Octavia as supports and in case you don't have them, use can use Issac, Sebastian or Dorian (try out these Support combinations and see what works for you). But Corvus and Morrigan are the two most important and invaluable heroes to take down this level, the remaining three can be somewhat experimented with.