Here is a Free to Play solution for this weeks Resonant Battles Week 173.
This week I don't know how many merges you will need to stay in Interval 21 as I did not have the 8 required to stay last week. If you were lucky enough to stay/get to Interval 21 feel free to post how many merges you need to stay.
To get to Interval 21 from 20 you will only needl need two Harmonic Heroes with 1 merge ( 446 score).
Also feel free to post wether the solution worked for you if you were in Interval 21, or what adjustments you made.
If you have any questions or problems with the solution, leave me a comment and I will answer to the best of my ability. #Balthiar #FireEmblemHeroes #ResonantBattles