Engineered Explosives seems like a much safer card to run than Maelstrom Pulse. Since it can randomly be used to hit problem stuff like Engineered Plague, Crucible of Worlds or Lorescale Coatl, but even if you're being kept off EE@3, you can always hold back a fetch or dual in hand to hit EE@2 and it deals with the largest problem, Tarmogoyf.
Admittedly it doesn't answer Elspeth or Humility though, which are both gigantic pains in the ass if they get online.