@iamfrightenedtoo:
Yes, Pox does put your opponent at a disadvantage when you play it correctly.
"Liliana is not going to be as good as everyone thinks in a real tournament environment, The best part is, if i am wrong and it is an auto win dominance your all claiming from your play testing, then it is a black card that plays well in black and WOFC will ban it almost immediately."
^ Care to elaborate? I don't think it's auto-win, I just think it is good enough to justify dark ritual.
@jin:
If you want help with your list (which is no longer pox in my eyes, but a non-thematic BG-control rock type of deck) I suggest you ask in the Rock thread. It seems a little more relevant now.
The reasons why dismember > smallpox in some scenarios are obvious. In others, smallpox > dismember. All I know is that if you're casting them for 2 mana, smallpox does less damage to you (and pings the opponent). Dismember @ 1 cc does too much damage to be useful when you've already got sac effects/board control. Also, if you're concerned about utility creatures or mermen early game, consider
Disfigure