FF1, HELP!

I am playing dawn of souls and i kept trying to find walkthroughs that would tell me how but couldnt so hopefully you can help, how do i get the excalibur sword?!?

Heh, you can get it very late in the game. You have to have the airship. Go to the desert with the tower in the middle and go in. On one of the futuristic floors (there are about 3 first floors, then you warp to the sky castle and there are some more. Look on the 2nd or 3rd sky castle floor) there is a treasure box with the Adamant in it. Bring this to the Dwarf cave, where the smith there will forge it into the mighty excalibur. You can only trasport to the sky castle with the cube, an item you can get from the waterfall above Onrac.

Thank you, I now have it.