Well, my argument in card advantage is that it would play out that my opponent would lose the effectiveness of at least 4 cards (Ports), possibly more (Dust Bowl, man-lands)from his deck, all of which take the place of a land drop (they're lands). I get to draw a card, and then I ignore the Web for the rest of the game. Card advantage based on the land cards requires the expenditure of mana, and requires a mana-land delay of 1 turn (unless you're a whacko that plays Ports because they can produce 1 colorless mana
).
These other cards become dead weight with the Web in play. While I agree that the Web prevents you from playing your Ports and Dust Bowls and Rath's Edges, what if your strategy WAS to use the Web to gain such an advantage against your opponent. While dead-weight colored cards can gain some use via discard mechanics (Foil, Unmask), there is no alternative but to use dead lands once and have them tapped the rest of the way.
I would think that a typical deck containing Ports, Treetop Villages and Dust Bowls would be extremely frustrated at seeing such a card. Even if the effect is temporary (you probably have some way of dealing with artifacts in your deck), the delay alone will generate card advantage for you.
Granted, as an artifact, the Web is vulnerable to many cards like Disenchant and Pillage. At least it pays for itself by "cycling" itself into play. Therefore your opponent in destroying it with such cards will essentially be paying for your cycling effect, which isn't so bad when you think about it.
In Extended, Wastelands are meant to be destroyed anyway, so playing them with Webs shouldn't hurt your strategy too much, if at all. Against Counterpost, I always SB in my remaining Wastelands (which I do prefer over Dust Bowl), which would probably mean taking out the Webs, if I played them in the first place. While a Web won't shut down entire decks (like the li'l Null Rod can), even the possibility of a single card shutting down only 4-8 of my opponent's cards, while simultaneously drawing another card for me, still generates some sort of advantage I would think.
All in all, I'm actually grinning at the thought of playing BOTH Teferi's Response and Tsabo's Web in a single deck, given the increasing amounts of utlity lands in the game environment. I can't really predict the TRUE effect of the Web in tournament circles until we see the first constructed tournaments going, but I'm sure you'll agree with me that it will be an interesting card to watch for. Initially I'm sure that a deck would play 4 of this instead of Ports. It would be a rogue for sure, going against the past environment's most sound utility strategy. Only future time will tell if such a rogue becomes mainstream.
Am I still making sense?
