Dragon lance

I need help. I´m trying to defeat Shinryu, but i don´t have any Dragon Lance. I try to steal it from Crystal Dragons, but i only get elixirs. I tried it more than 10 times, and always is the same... I am playing the pal version of FF5 for the Playstation. I´m at level 53 and i have defeated Omega.

Thanks to all!!

If you don't get a Dragon Lance just use the "Reset" ("Return") Spell (Time Magic) and try again. When you've got it, finish the battle and look for another dragon, if you need more Dragon Lances (you really won't need more than 6!).
You'll have to "reset" the battles many times - so be patient!