FAQ
Q: Dood, so and so is totally not an odd pairing.
A: It's not common either. The pairings are not designed to be the most odd, but rather balance the elements out.
Q: What's a duo? What's a pairing? How do I touch my nose without falling over?
A: *sigh* Read the forums once in a while, will ya? A duo is a deck that consists of two different elements. "Other" cards do not count towards an element. The pairings denote what elements your duos have to be made from.
Q: But dood, Discord bla bla duo environment bla bla.
A: Quanta denial is versatile because it works on both stalls and rushes. It's not overpowered, and also less effective in the upped environment. Adapt.
Q: Can I have more than 40% of one element?
A: Obviously. As long as you have at least 40% from one element, you're fine.