Forest biome??? Unless this feature isn't out yet XD
Note: this feature is currently in beta.
Comment below either pinging or linking to a Rank I+ Twilight Child you own with a biome you'd like to search for, and a planetary system will be rolled with it. At a later point you will be able to specify more details.
Twilight Child: https://tracker.evocrit.com/magical-tcmb/adopts/27