Take the Ancient Pattern, Platinum Speckled Powder and Enchanted Clay and place them together on a pottery wheel and hit combine. You will create a Runecrested Bowl . Note that this bowl is NOT a container. Do not close the Pottery Wheel down with your ingredients inside - No drop items are destroyed in this way. It would appear that you do not need any pottery skill in order to do this combine, although those of nervous disposition would I'm sure like to note that my Pottery skill was 186 when I made my Runecrested Bowl.
Continue to phase 7 of this quest