Ancient Oven

This 5ft. by 5ft. bastard of cold iron is too heavy to carry normally. Used by the most primordial of Chef's its secrets can only be unlocked by a Fire Genasi with a proficiency in cooking. 

LET HIM COOK:

Make three DC 15 skill checks of the user's choice that are appropriate to the dish created. 

Upon success, the Oven deems you worthy and a boon will be granted..