You need to be able to beat the common archetypes with any deck you are building and in order to beat the fast agro decks you typically need lots of cheap things to be playing so as to not get overrun too fast
Its also a 6/6 Flampler that borrows from Hoard-Smelter Dragon in a decidedly less impactful way
Then you remove two crime scene cards, shuffle up the remaining Evidence Cards, and deal them out to the players face down
Here are some incentives for it: Cards like Corrupt, Cabal Coffers, Mutilate, and Defile want you to play as many swamps as possible, so their efficiency is maximized in mono-black decks
If it gains 8 life all by itself with double strike, the reanimator aspect gets really powerful
Lim-Dl's Vault You can find anything you want, but it might hurt a little