This is a build of the Standard Gates deck, but one which tries to avoid using white at most. That said, it's (currently) splashable in the sideboard. The main addition to the deck is Pelakka Wurm, which plays the role of Archway Angel while having a bigger body and replacing itself on death. Open the Gates is just a consistency card.

I'd like help specially on the sideboard. I'm not used to building sideboards. I believe the deck can play well against most of the meta, but Mono Blue specially is giving me headaches. I'm not sure if this sideboard can beat it. Also, Lava Coils are for Steel Leaf Champion, which is death if dropped on turn 2.