okay so maybe i'm a bit behind on whats going on, i recently bought Pokemon Y after a literal 13 year hiatus from pokemon games.

anyway, i just got a Lvl 100 Shiny Magikarp from Wonder Trade....
is this a joke or something? is it possible to turn it into a gyarados or is it tradeable for any actually good pokemon? it has 146 def and 196 speed but every other stat is garbage