i think magmotar
magmar, slugma, macargo, magby, magmortar
heatran
You have to start or partner with it ,or recruit it in giant volcano or dark crater. ( bosses hetran for giant volcano & darkrai arbok macargo aggron missmagius rhyperior & magmortar for dark crater)
you can find slugma on cycling road in kanto. he will eventually evolve into macargo.
Carry around Macargo, Slugma, Magmar, or Magmortar's in your party. Their ability will cut some of the time off the egg hatching. I personally carry 3 and cuts it in half for the most part. Use 5 though for the fastest results.
in stark mountain,
macargo doesn't evolve
macargo has it
you can not evolve it
You get magmortar in pokermon packs he is rare but not that rare
Magmortar, charizard has too many weaknesses
level 38