Luck.... most of the stuff you listen takes neutral from Fire or Grass, or both, or is hit SE by one (Regirock, TTar has better SDef and starts Sandstorm).
I would vote no on everything in the current discussion besides Zap Cannon, Charge Beam, and maybe Brick Break. A Physical set with Rock Slide + Swords Dance takes out Salamence (Intimidate helps a little) and Dragonite too easily. AncientPower because it allows him to run other HP types mainly, and the potential stat boosts might be overpowering (not much of a factor though).
Also, saying no Dragon moves, just to be safe and redudant.
I would vote no on everything in the current discussion besides Zap Cannon, Charge Beam, and maybe Brick Break. A Physical set with Rock Slide + Swords Dance takes out Salamence (Intimidate helps a little) and Dragonite too easily. AncientPower because it allows him to run other HP types mainly, and the potential stat boosts might be overpowering (not much of a factor though).
Also, saying no Dragon moves, just to be safe and redudant.