A specially made bowl constructed out of pure gold and blessed.
Smithing 2 Gold bars, during Legends Quest.
Take 2 more Gold bars and use it on an Anvil.
This bowl is filled with Blessed Water to access the star-shaped wall of fire surrounding Ungadulu during Legends.
Made by having 2 Gold bars in your inventory, with a Smithing level requirement of 50, the Blessed gold bowl is used only during Legends Quest to enter the star-shaped wall of fire to speak to Ungadulu. After the quest, it has no use whatsoever.