ok my red gyarados is male,if i breed it with dratini/dragonair female do i have 1:64 chances of getting a shiny dratini???
Well, Gyarados and Dratini are both in the Dragon Egg group, so you can breed them.
About that 1:64 chance... i heard before that there is a higher chance to get a shiny in GSC if one of the parents is shiny, but i don't know how much the chance rises and whether that's true or not
There is no certain chance. You will become lucky when ever its shiny. It could take a very long time or come quickly...
Is there a way to teach my red garyados MIMIC without trading the tm from older versions?