Just do the normal quest (the quest u got UC cards). Let's say 1 area have 5 floor and 1 normal boss (didnt cost ur blue gauge when u fight it). When u advance to area 10th u can encounter wyvern boss (rank 7 boss) and other weak bosses. But when u advance to area 13th, some weak bosses like slime and bird wont appear anymore, u will encounter wyvern and dragon boss (rank 8 boss) more often. Try to kill all 4 elemental dragon to get some pretty good R cards.
Rank 9 r crystal bosses and silver dragon (non-elemental) at area 15th.
Rank 10 r elemental reaper bosses (can get equipment but only for selling, a mountains of copper and silver lol, copper is 10k, silver is 20k, and SR cards but very low %), and a giant stone golem (good R cards) at area 18th
I didnt see any Rank 11, 12, and 17 though.
Rank 13 is gold dragon and Rank 14 is Black Dragon. Both is non-elemental with good R and SR cards can encounter at area 21th.
Rank 15 r Dreadnought (translated wiki an armor monster, and I fighted it with my japanese friends, although it looks like non-elemental but it actually scare of water), and brand new boss Metal Turtle, the one we fought in event but this one is stronger, non-elemental, and will be permanently after event).
Rank 16 is Broken Dreadnought (half of its armor is broke, and scare of wind instead, have 1 really good SR wind card). Both Dreadnought and Broken Dreadnought at area 21th too but Metal Turtle at area 25th.
And finally Rank 18 is a Big Crab ?? (too ugly to describe
, But have the good SR fire card) at area 24th.
The final area of normal quest is area 32th but no one know if they will make some more. In normal quest u will get R cards later, when u at area 21th. I'm still at area 19th farming cards for my R++ max all and SR++ max all (damn the summer event, and poor my money T_T)
