https://www.humblebundle.com/monthlyIf you subscribe for a month, costs 12$, you get Overwatch plus few more games.
After you subscribe you need to link your humble bundle account to your Blizzard account after which they send you Overwatch code to your email which you later redeem on Blizzard. It's really worth it considering Overwatch is 39.99 EUR.
It really works, humble bundle is a popular site so it's not a scam. I did it too.
Also if it's your first time buying on humble bundle it's 10.80$ not 12. So even better.
6 more days left so go get it while you can!