Would this work in terms of coding?
Not as it stands now. This would require a lot of changes in the "infrastructure" to make it happen. This is more of a feature suggestion disguised as a card idea.
30 Gambling tokens + top 50 farm deck + normal deck = omgwtfbbq
How would you attain these things?
You would buy them at the bazaar just like any other card. I have no idea what a good price would be. If you enter top50 and
don't get a farm deck, odds are you will lose and you lose all the money you spent on the tokens.