Cards I like a great deal:
BLACK:
Carrion Rats
Let's see, 2/1s for 1. Savannah Lions (gone), Mtenda Lions
(easily nullified), Jackal Pup (hurts you). And this one can help empty out your oponent's graveyard!
Carrion Wurm
6/5 for 5? With a drawback that isn't? Green should have it so good!
Dawn of the Dead
Combo me!
Faceless Butcher
You lose a creature, I gain a creature, 2/3 gives him a nice fat body, and he can be used with your OWN 187 creatures to repeat!
Insidious Dreams
It's the first multi-card tutor, unless you count Mangara's Tome...insta-combo!
Laquatus' Champion
Let's see. Six mana, six power. That's good. Regeneration. That's better. Hits for 6 when he comes in. That's amazing! I've won games just by having him resolve.
Mutilate
This should be self-explanatory. Black should always have had Wrath...and now it does.
Nantuko Shade
I reiterate: when power is greater than or equal to casting cost, that's good. Add that to pumping, and it's amazing! One of the best creatures in Type II.
Shade's Form
Let me get this straight. I can play it on my own creature for recursiveness and the ability to pump...or play it on my opponent's creature and kill, then steal it? The split card that wasn't!
BLUE:
Balshan Collaborator
Flying pumpers have always ruled the skies, when reasonably priced...and at 4 mana, this flier is quite reasonable.
Circular Logic
When played late-game, this is identical to Counterspell! Can you pay 10 extra mana for that?
Ghostly Wings
I grant evasion to my creature. AND make it bigger. AND give it the ability to bounce. Or, in a pinch, it's a two-mana sorcery Unsummon on one of YOUR creatures. Not bad at all!
Possessed Aven
3/3 flier for 4 that grows. Enough said.
GREEN:
Basking Rootwalla
The Rootwalla cycle was always pretty good, and the idea of being able to throw this guy to a Verdict and pump it next turn is just too good to pass up.
Narcissism
Let me get this straight. For a fairly modest investment, every card in my hand turns into a miniature Giant Growth? And the card itself is one as well?
RED:
Grim Lavamancer
R for a 1/1 that shoots for 2 on demand whenever you have the cards in your graveyard? This guy completes any burn deck!
Devastating Dreams
Wildfire, made-to-order? And at a severely lower casting cost? How could you NOT love this card?
Longhorn Firebeast
Let's see. Power equal to casting cost. And my opponent can make it go away, but only if he pays 5 life...which, in a quick deck, he can't afford to pay. I'm all for it!
Fiery Temper
Sonic Seizure
Violent Eruption
Instant speed burn, I've missed you so...*sniff* Even at 3 mana, or the cost of an unwanted card, or at heavy red...these are too good to pass up.
WHITE:
Militant Monk
What you have to realize is that you're not paying for a 2/1. As an attacker that doesn't block, and also taps to prevent damage, you're paying 1WW for a 2/3. Or two points of self-preservation a turn. Me likey!
LAND:
All of them!
Cabal Coffers can be a huge mana boost with enough time to wait. The Tainted Lands are easy to get working in a deck with halfway decent mana production.
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All in all, I like this set. Madness has the potential to be a little crazy with the right cards...