How does this bg look like now? I prepared a base of what I think could be used, but I know this theme has several possible builds and can be mixed with subthemes like elementals or snow/ice or couple mechanics: https://poxbase.com/deck/c4vC5kclUc83cpdC79ck=c4icy_cg7Ctxs14s7@s19S2Ls3US13sNs4Vr1yrwrIe2Pe3P I don't play ST or didn't see any frost recently, so maybe the meta looks a bit differently.
These two threads would be helpful: http://forums.poxnora.com/index.php?threads/help-my-permafrost-bg.24817/ and: http://forums.poxnora.com/index.php?threads/my-amp-frost-bg-cause-st-is-op.23711/
im a noob but managed to beat 3 rare and 1 exo league ranked today, this bg just so straight forward, so i have no trouble to manage them in game, maybe this bg help