This mod adds all old staffs from the Better Dungeon mod!
You can get the Essences from Dungeon Loot, this been added in 1.2 version of this mod!
Finding the essences in version 1.12.2 was added in update 1.0.2.
If you are looking for the dungeons there is a mod called Chocolate Quest Repoured.
English (1.12.2) from Redstone KnightX
German (1.15.2) from Zeranax
Russian (1.15.2) from Лаймстоун
Vietnamese (1.12.2) from PETER TV
Magical Arrows (1.8+):
Magical Grenades (1.9+)