I see on this web that the egg moves of snivy include twister. How do you do it cause it would be really nice to have serperior that has a sp atk boost plus twister. Please help me!!!
The easiest way to do this is breed it with either Farfetch'd, Shiftry, Tropius, or Smeargle. They must also know Twister, but you already knew that didn't you :P
Breed a male Shiftry, Farfetch'd, or Tropius that learned it via Gen 4 Move Tutor with a female Snivy, Servine, or Serperior.
Or use a male Smeargle that copied the move via Sketch and breed it.
Breed a female Snivy with a male Farfetch'd, Shiftry, Tropius, or Smeargle. The first three can learn Twister through a move tutor in 4th gen, and Smeargle can Sketch it. The Snivy offspring will have Twister.