This is not a new issue…
30 troops currently available in Forrest of Thorns
8 of them available for the Class Trial
Summons @Kafka to have her show us a great team to make out of this rubbish limited selection.
Otherwise consider making Archer a different class type (3 Elf Hero classes is excessive) or actually consider Archer Class Trial when releasing troops for this kingdom. If you’re going to have a weekly event, perhaps you actually continue to support it.