Hardest Boss in Game?

[Aquatylys]

Level 50 patch included!

I wonder what is the hardest boss in game...maybe some players who played on Korean servers can tell me who is the hardest one!

I'am thinking between Blackwyrm and JinSoYun...but Blackwyrm will be weak when players will be at level 50 and will have over 700 AP, Blackwyrm being level 47...JinSoYun I consider to be hardest being the last boss in game!
Or maybe there will be another dragon like Blackwyrm...something more hard at level 50...what do you think?

[staahpxDD]

I dont really remember whats the hardest boss in lv50 content when i was playing private server RU. Imo, i consider JinSoYun (second form) is the hardest boss but she can be easy if you know her rotations. i ran with the party facing her 4 times lol. Once you get familiar with the mechanics from her, she`s ez pz xD. Can`t wait to face her again for the 5th time once we get lv50 content update to silverfrost mountain :D