This mod, in a nutshell, allows you to play god. You take bodyparts from slain foes, stitch them together as you see fit, and reanimate the horrifying resulting. Enjoy.
Extensive review with less creep factor
What this mod adds:
4 new Blocks such as the Surgical/Summoning Altar or the Sewing Machine
9 new Items, 2 of which are weapons and 1 helmet, also a Brain on a Stick
a secret and terrifying ranged weapon
2 new hostile Mobs spawning along with Zombies and Skeletons
collect the Lifeblood and the Souls of your Enemies
craft and animate your own Minions from 16 different Creature's parts and subsequent stats