When I feel that I have no chance to reach Top50, I try to settle for a basic booster as you can reach a broader source of rare and mythic cards rather than from HOU or AKH boosters.
I’m in Silver, so I get them from progression oftentimes. I’ve actually got a good enough collection that I’ve started placing top 5 pretty consistently.
I can’t remember the last time I pulled something other than a C or an UC from one since they only started giving them out for progression. I suppose it’s to be expected.
You can use the thread I have created to post this info. The title says free boosters, but I’m giving data from all bosters. And Volrak always checks it.
I was thinking about adding this there, but I thought making a new thread might encourage other people to keep track of their basic boosters too. It’s probably more convenient in one spot, so I’ll copy what I have over to your thread.