Description: I chose Trick Room to take advantage of his good attack and poor speed. Your opponent usually won't expect it from Trevenant.
The best part of this set is the Forest Curse and X-Scissor/Poison Jab combo. Forest Curse adds grass typing to your opponent. I think it's amazing that he can learn X-Scissor and Poison Jab (which we all know is super-effective to grass types). You can take your pick on which one you'd prefer, Poison Jab for 30% chance to poison your target (except of Steel types who take no damage from it) or X-Scissor.
Options: Phantom Force (goes through Protect and Detect), Shadow Claw (a solid choice), or Wood Hammer (very powerful, only downfall is the recoil). Horn Leech seems like a decent option to consider as well.
This is a good moveset for trevenant (Pokemon #709) with the harvest ability/trait, a Brave nature, and equipped with Sitrus Berry submitted by PokeReaper. For use in competitive Pokemon battles featuring an Export option and breeding guide.