Thanks for the link Super...and I think the way one can change the Relic Sword thru to it's 4th lvl (Excaliber) is by going to an NPC named Switchtix). I spent about 20 mins reading the chart got from link u gave and maybe it works like this...
Take the Relic Sword with [b]Koh-I-Noor, Orichalcum
