Razor Leaf - Its a must for any Grass type in Mystery Dungeon, Complimenting him with its physicalness and reliable PP.
Earthquake or Dig - Get some Ground STAB E-Quake Rocks in crowds
Rock Slide or Stone Edge - Either Works, Great in this game
Bite - Lots of PP, Used mainly to be a selected move for going through long dungeons, you can use it quick, and do enough damage to affect them.