Modding Help

[NeddoFreddo]

I have been making a character mod called Wilfred the Musician, and he is a WIP but getting along good. 

My issue is, i need another downside. Atm, he is waaay to overpowered. He brings along his violin which is like a less powerful panflute with infinite durability. He will fully starve in one day, but you can use the violin to catch and kill birds.

So yeah. I need another downside. I was thinking about giving him a sanity drain when he kills small animals, but I don't know ow to code it, so if anyone can help it would be greatly appreciated.

If you have any other ideas could you please help me?

Thanks.