The new item block and structure help you acquire these weapons. All weapons have custom crafting recipes, making them survival-friendly. How Does It Work? - There is 3 bars in one mana bottle. You start with a fully empty bottle and it takes 10sec to fill each bar so 30sec to fill the entire bottle. Each interact ability takes 1 bar to use, once you use the ability 1 bar gets removed from your mana bar and it starts to regenerate again. You can increase the time of mana generation (30sec => 15 sec) by having the mana star in your offhand Q: How Do I Know What A Weapon Does? A: Once you load in a world you will be given an item called Book of Knowledge. Interacting with it will tell you what each weapons do.