Those crystals are heavily breakable, and the only way to get them are seassonal characters (2 per season).

So, to complete a full set you require 7 seasons, and luck because if you break some on the process will delay the set for 3 more months.

To complete the trick, they cannot be sold on the market.
I already have 18 characters, most of them prior to the seasons so force me to repeat history every 3 months is more like a torture than a reward, and we all play BDO to enjoy our free time... not to suffer.

Yeah crystals that can only be obtained with quests/loginreward/seasons/etc is stupid, all of them should be drop or craftable, but this is PA....

I am so pissed right now. Why make a crystal that is only used when playing weak low level season characters where dying is more common