I think at level 96
Lv 96
Heatran, but smeargle can if it uses sketch after heatran does.
96
Kadabra will learn it not sure when.
Heatran is the only Pokémon that can learn Magma Storm.
No, not all Pokemon in Diamond can learn Hyper Beam.
How does riolu learn aura sphere in pokemon diamond version?
A number of fire type Pokemon learn this move, such as magby and its evolutions, cyndaquil, entei, numel, torkoal, and heatran. For more information you can check this detailed listing http://www.serebii.net/attackdex-dp/lavaplume.shtml
In Pokemon diamond many Pokemon can learn flash for eg. Electric Pokemon such as Pachurisu Pichu and Luxray all (eveloutions) and yeah just experiment and see what can learn flash!
Keckleon Mightyena and oall the pokemon learn using a TM.
Heatran cannot learn fissure.
Fire Fang isn't a TM, so you can't obtain it or buy it. You need to get it by leveling up Pokemon that can learn it. The following Pokemon can learn it by leveling up (note that these Pokemon need to be in the game Pokemon Diamond in order to learn Fire Fang): Charmander, Charmeleon, Charizard, Arbok, Growlithe, Arcanine, Flareon, Aerodactyl, Steelix, Snubbull, Granbull, Houndour, Houndoom, Donphan, Entei, Tyranitar, Exploud, Manectric, Salamence, Garchomp, Hippowdon, Drapion, Gliscor, Heatran The following Pokemon can learn Fire Fang through breeding (note that these Pokemon must also be in Pokemon Diamond in order to learn it): Rhyhorn, Rhydon, Snubbull, Granbull, Houndour, Houndoom, Poochyena, Mightyena, Mawile, Electrike, Manectric, Bagon, Shelgon, Salamence, Shinx, Luxio, Luxray, Rhyperior