# Durability Exchange

![](/files/08c686994fa8442077862d938451139c962a87bd)

**Obsidian Sheaders** have over a million durability, but Mahou Tsukai caps durability exchange at like **2,500** durability. The recipe is cheap and easy, so that’s why I use it. Each **Durability Exchange** spell circle can restore a maximum of 10 mana per second, so you will need a large amount of spell circles and chests for you to be able to gain the mana you need to efficiently swing your [Morgan](/guides/all-the-mods-9/mahou-tsukai/morgan.md) at villagers for damage gain.

![](/files/a94d915cdc820381755ee85a98fd748ab8ce3745)

![](/files/f24a043ccee3d1ada8a3ee6248581e07147cb466) ![](/files/292739c6fc43aedff52ece3355632ba05edad729)

> Mahou | [CurseForge](https://legacy.curseforge.com/minecraft/mc-mods/mahou-tsukai)


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