@ten-ten good idea, we could also just add dark depths combo as a win con and change the name of the deck to "Terrains" or something like that.
@ebgmtg Iam not a fan of pyroclasm solely because of its sorcery speed. Taking mana away from the turn in which you you want to remove a disruptive element to go off, makes the latter much harder. Especially if you where pressured by those creatures for life total, you probably wont have a ton of lands to work with.
Eot removing a disruption piece, then untapping and going off is way smoother is you ask me.