Ninja Mod implements many different katanas, armor, items, and a small dojo that you can find spawned naturally.
Video:
How to use:

Get Raw Carbon:


To craft a Steel Ingot, put an iron ingot and raw carbon into the crafting table.Craft a Katana:


Craft a Fire Katana:


Craft a Water Katana:


Craft an Earth Katana:


Craft an Air Katana:

Craft a Legendary Katana:


Craft a Ninja Star:


Craft Climbing Spikes:
Craft Common Ninja Armor:
Craft Ultimate Ninja Armor:
Elemental Katanas:



- The first elemental katana is the Flame Katana. It will set mobs on fire when hit, and also works like a flint and steel.
- The second elemental katana is the Water Katana. It will slow down mobs when they are hit, simulating being underwater, and also works like a water bucket on the ground.
- The third elemental katana is the Earth Katana. It can hoe grass without loss of durability, and can poison mobs.
- The fourth and final elemental katana is the Air Katana. It can launch mobs into the air with one swift gust.
How to install:
- Download and install Minecraft Forge.
- Download the mod.
- Go to %appdata%.
- Go to .minecraft/mods folder.
- Drag and drop the downloaded jar (zip) file into it.
- If one does not exist you can create one.
- Enjoy the mod.
Download Links:
For 1.8.1/1.8
http://dl.mod-minecraft.net/download.php?file=66b764481c73a5182bd3ac304c2d8b8f
For 1.6.4
http://dl.mod-minecraft.net/download.php?file=ea9706ec78b87e8b35aefc649f02802f
For 1.6.2
http://dl.mod-minecraft.net/download.php?file=e11aebfce820b7b2cb1f83472d7a77c0
Credits: MtnDewey