Does anyone knows the way of activating the bugs / hidden bosses? I was able to discover two fo them, but not the others

The Holy blast card ( at least lvl 2 and 3 are still in original language when playing in English)

what bard told us that when war is over, 4 artifacts will reappear and if they can be placed in their original spots, the creator's secret will reveal itself at the center of the lake it is the same that let us choose reward when the lake freeze? what're those 4 artifacts exactly? are they Cultural Relic that we have to give it to Scholar for lv 1 enchantment stone? ** btw if you know anything about pond of seclusion's True Ending and Hidden boss, you can share here too not i'm at EPIC 15 and i still hav...

I had no idea how to adjust Epic levels before, so I am pretty behind and just beat Epic 10 not long ago. Looking at the penalties, I was wondering what everyone's opinion are on which one are least bad and most bad? Having only tried out 2 of the penalties, only by reading the text, I feel from the ones I have access to least bad to most bad feels like: (least bad) Enemy will flee Gain less hp on level up enemy higher hp enemy higher str enemy more card reserve Reduced Award Card Pool enemy higher energ...

Will this game have one?