I just picked up a purple nymph from the oracle the other day and I kind of want to build a deck that revolves around it. I just started playing so I don't know what would be the best option for this kind of deck. mono, duo, rainbow. Right now I am using my beginners deck which is darkness. It's got 4 obsidian dragons I can sell to help make a new deck if needed. any help would be appreciated. thanks in advance.