This is my new weapon which is the scythe. It can kill any mob with one hit. It's my first item mod. I'm pretty sure it includes mo' creatures mobs and More Creeps and Weirdos mobs except for maybe a select few. It's also a pretty good pick. The mod uses modloader so make sure you install that then just drop all of the class and png files into the minecraft.jar file. to craft it you use Netherrack and Soulsand.
+ +/
/ * /
/ * /
+ equals netherrack, / equals nothing, and * equals soulsand. its like an axe without the bottom part with the handle being soulsand and the blade being netherrack.

AND DON'T FORGET TO DELETe META-INF.
Comment and let me know what you think of it.

Youtube video to come

BIG UPDATE: Alright I'm getting closer to figuring out how to do this. Demon Sand and Deathly Netherrack are now blocks in my minecraft. I just need to make them to be able to be used as crafting items.

LAST UPDATE: To everyone I am very sorry but i can't figure this out. I'm storing this mod away for now and am going to work on another one.
Cheers