In War #1 Fire, Entropy and Earth did well without Discords (we lost almost all of them in round 1). And Zanz promised some kind of anti-denial card.
and very hard to counter if you have to expect them not only from team 
, but also from every other team.
Not every element can make a good deck by simply taking 3 discords and an entropy mark or some novas.
If they can't make a good deck, there is nothing to be afraid off, right?
Another thing is: blocking discord won't change a thing. We can simply pick more other useful cards instead.
A quick summarize on strategy. You have 4 main strategies of Elements. Rush, Control, Denial, Stall. Every team should have all of these. However, not every element can do all of these alone, so we borrow cards from another. Look how often Graboids were used. Wings, Poison. All of these are candidates to be the main strategy of a team.
Don't say Propaganda is a bonus. You knew you would get 12 cards in round 2. It was a part of plan like any other card. Place 1 and 2 were bonuses.
A non
team can for example take 24 poison to their starting vault. Who will expect that? Poison is a great card in control/stall decks. Just like graboid is great in rushes.
Let's look at Denial more closely now. The core of the deck is to stop your enemy from using his strategy. Now let's look at possible denial cards:
- earthquake - great card, early quake hits a player so hard, that he can basically quit to menu. Look at War 1. Near the end almost all decks used either quake or immolation to counter quake. Luckily, pendulums and now Soul Catcher nerfed that card indirectly. Teams can use alternative source of quanta and make this card useless.
- pest - the weakest denial card. Absorbing 1 quanta per turn barely slows down your opponent. Also the generated
implied that you should devote your deck into a darkness duo. That is not a good plan. Fractal greatly increases it's potential, but now you are devoting yourself to both
and
. Devourer is a strategy only for the few. Entropy took some devourers, but even we, with Lycanthopes considered this as one of our weakest decks.
- black hole - not very good in duo environment. It gets powerful combined with discords, but again, it's a strategy for only a few teams. If there is any reason to take it, it's to defend yourself from
. And even that is questionable, since they will expect it.
By elimination, any team that wants to have denial should take discord, as it's cheap and useful, and you don't need to devote much of your deck to benefit from it.
If you want to bad discord, why not ban firebolt? Or Poison. Or quintessence. Or any other card that can be considered "key". I don't understand the difference between limiting Denial and limiting Rush.
