Custom Weapon: Destiny

where is ragnorak anyway?

certain weapons are in different locations

Ragnarok is located in Narshe in the World of Ruin and can be accessed after Locke(or whatever character sprite you have in his place) rejoins you in the Phoenix Cave. When you bring him back to Narshe he can unlock all the locked doors and in one of the shops on the left side of town. You will find an old man who will ask you get the Ragnarok Weaon or Magacite, all I know is that its in Narshe after you get Locke back.