A solution to the rare crisis might be to make PVP be more then just the top 50. if it were top 150 then the chance of getting the one messed up deck is reduced by a factor 3.

I think limiting the rares to 2 in a deck would also help a lot.

It might be possible to have a used counter on rares, so a deck could be played against only so many times, before the rares stop being given out by it. If a rare is chosen by the spinner it gets a counter incremented, if that counter exceeds a certain value then it becomes un-give-able, if the spinner chooses that card it just spins again. all the rigged decks would give out would be pillars after some number of rounds.

just a thought
Polygot.

@zanzarino

any thoughts on my previous suggestions?