The King Under the Mountain goes to his forge and fires up the coals....
Soon, his mighty hammer pounds the heated prism artfully, masterfully, shaping it into a long, razor-sharp blade imbued with dwarf-magic and divine power!
Lifting the perfect blade with his tongs, he plunges it into a great block of ice in his cavernous forge, tempering it with fire and ice....
Behold! The Bifrost Blade! Doom Rainbow!
The King Under the Mountain forges Doom Rainbow: +5 prismatic corrosive flaming shock greatsword!