You don't want one, EVER, they one shot protect 4 diamond armor :/ I lost like 3 pairs of armor to it, (don't tell QUICKALERT but one of them was his protection 4 armor, the others where my mining and iron I made) So yeah... FML
Aw, don't you worry. Them big zombiepusses actually have little kittens trapped inside of them, mewling to get out. All ya gotta do is just find that itsy-bitsy cutesy kitten inside the big green vicious zombie. Not too bad, eh?