Starters

How to get starers if not from Birch? 
 Since you're from Mossdeep, maybe from Steven? 
 He offers you starters that become ground/rock/steel. Probably need Hoennian forms for that, since otherwise it's only Empoleon. 
   
 Ideas: 
 Fire/ground: Skeledirge 
 Grass/steel: Rillaboom 
 Water/rock: Blastoise