Random Runes after a battle

[Mordris]

Thanks for your help guys, but I still have something to ask.
As I stated earlier, I use the giftbag mod/addon, and the arena.lua file is located in king's bounty folder---->sessions---->items_pack---->new_items--->scripts--->arena

Does is still interfere with the bonus rune mod? If so, I will do what you said, The Rider.