Imagine a monoblack deck set on denial. Main goal is to destroy land and creatures.
Play some Reassembling Skeleton and, if you use Swarmyard you can easily play Typhoid Rats
Now you have some cheap creatures that can ALWAYS come back.
Play some rats and skeletons and throw out an Innocent Blood and you basically have an easy way to destroy opponents' creatures while maintaining your own battlefield.
Better yet, get your hands on a Death Baron. Not enough zombies to do so? Throw in Grave Titan. Now all of your 2/2 zombie creature tokens become 3/3's and if they get destroyed, just attack using your Grave Titan. You have an infinite supply of 3/3 zombies, assuming you're smart enough to keep your Titan on the board.
Posted By:
itskelseydrew
(4/7/2012 9:19:39 AM)
This card is nice against aggro decks early game, and certain control decks late game for a multitude of reasons. Also it notably gets around protection, indestructibility, shroud and hex proof. So not even the most durable creatures are safe. And all just for 
. Easily a 4/5, at least.
Posted By:
BongRipper420
(9/30/2012 6:53:31 PM)
Latronis, not ever word that has an s on the end needs an apostrophe.
Posted By:
wholelottalove
(10/19/2012 12:14:51 PM)
@Darthparallax: Renounce the Guilds is a dead draw very often - if your opponent is mono-colours, just doesn't have his multicoloured stuff out (most decks only have like eight or ten multicoloured cards and they're usually at least 3 mana so this is mostly useless until turn 4) or if you have your multicoloured stuff out, it's unusable. Innocent Blood can be used in so many situations and is by far the better card.
Posted By:
Lifegainwithbite
(8/12/2013 5:32:44 AM)
Dear Wizards,
Please reprint Innocent Blood.
Love, Target Player
Posted By:
MRK1
(12/4/2013 3:00:16 PM)
What's that? You've got all three eldrazi titans on the field, and all I have left is Savra, Queen of the Golgari, a swamp, and Grave Pact?
Okay, you would probably still lose in the end, but this card is great
Posted By:
SevesDariku
(12/23/2013 7:55:27 AM)