Fairly simple exploit, but absolutely devastating.
If you are on an Android device, you can hide the app during your mulligan. After reopening, both player's portraits will explode, resulting in a draw.
You can do this on a PC as well using AMIDuOS.
What does this mean?
- Guaranteed 12-0 arenas by restarting for the perfect hand.
- Easy Legend by avoiding every single bad matchup since you can see your opponent's class and their mulligan.
- Dodge every
This is probably the biggest bug to date, even more gamebreaking than the Hunter tracking exploit.
www.youtube.com/watch?v=AY3pFeFKZT0