Hey. Boston Major incoming and you have chance to get souvenir cases from this tournament. Steps to do:
1. Create/login into Twitch account
2. Go to Settings=>Connections and connect your steam account to Twitch
3. Check the schedule closer to 12.01 and watch the show or just keep opened Twitch tab with the stream
Little tip: make sure you're watching Live, i.e. there's no rerun text on the screen.
Also keep in mind - there are hundreds of thousands viewers and chances aren't great, but as for doing nothing - still great.
Good luck gents and lads.
UPD: Stream:
https://www.twitch.tv/eleaguetv
Schedule:
http://www.eleague.com/major-2018/schedule