Let us unmaster cards

Metroplex78

I'm sure many of you are in a tier you're completely unprepared for, the reason being the game thinks you're a badass player due to the amount of mastered cards you have.
Well, I hate to break it to the devs that implemented this system, but you can have a bunch of **** mastered cards which in no way means you're ready for the higher tiers.
I'd say 70% of my mastered cards are ****, I just don't use them anymore, now I'm up against whales with mythics and masterpieces which isn't fair... so my suggestion: let us unmaster the cards we think are **** and use the resulting mastering exp to master the ones we like, after all we earned that xp already, we should be free to redistribute it as we see fit.