I have a physical set Snorlax with the moves: Heavy Slam
Earthquake
Crunch
and Yawn, which I plan to replace.
I don't have any normal moves, but I was hoping to provide him with moves of different types , and I want Seed-Bomb as the only Grass type move I have is on my Raichu(Grass-Knot), and it could help against Pokemon such as Tyranitar and Rhyperior.
However, Zen-Headbutt could protect him from Fighting types, though with his fairly low speed he could end up being KO'd anyways. Any other advice is fine, and thanks in advance. :)