same as on ruby/sapphire, it evolves once at level 16, and again at level 36. It's one of the starter Pokemon in ruby/sapphire, so look after it!
Level 18.
Level 30.
Level 30.
level 28
Level 25
Level 37.
Level 26
at level 40 it should evolve into drapion
Spiritomb doesn't evolve.
you have to evolve it with a water stone
Donphan doesn't evolve.
level 36