Hi; a thread that may be of interest: 5* heroes positioning guide
That being said my $0.02 would be to run:
Fenrir - Clarissa - Justice - Sartana - Marjana
Makes use of the “yurple” setup where you play off the innate resistance that Yellow and Purple heroes have to their own colour. So if a player stacks purple against Justice, they will be weak tiled against Clarissa and Sartana in the flanks.
Justice is not a BRILLIANT tank but she is solid. The only real downside I have with the lineup suggested is the clash of emblems between Justice and Clarissa. But for now, that is a relatively minor issue.