This mod adds a knight that occassionally spawns on the overworld during the day, or at least that's how it's supposed to be.
In order to tame him, you must give him iron ingots until he is satisfied. You can also technically heal him with them, but I wouldn't recommend that since it would be fairly expensive and he already heals passively, albeit slowly.
Now, here is a list of things the knight can do:
You can make him attack all monster entities within a 15 block radius by placing the 'Attack Command' item into the Attack Command slot (off hand). This item is crafted with a single stick. You may have issues using this in caves.
The knight has 20 health and 10 armor points. He also deals 7 damage (with default sword), and has 3 blocks of reach.
There are also some issues with the mod:
That's all there to the mod at the moment, I hope you enjoy it. Also, if you find any issues, please leave a comment.