does anyone know exactly where is the W-Magic materia in the Northern Cave ?
i went everywhere but didn't find it..
thx

No, if I'm remembering correctly and my FF7 memory isn't playing up, then you get w-magic from winning it at the chocobo races.

http://www.ffshrine.org/ff7/ff7_mat_command.php

W-Magic
Master - 250000 AP
Final Dungeon.
1 gil
None.
Cast two Magic spells at once

..

Question awnsered.