As a Conjurer, Oliver is capable of using his aura and forming solid objects with it, his trademark technique being creating food. He can give these various foods different appearances and abilities. As his status as a Gourmet Hunter, his ability to conjure food is almost vital to his job. It appears that he can create disgsting looking dishes that taste delicious and vice versa, his food can also take on varying shapes and sizes with appearances akin to monsters.
Crazy Cake (怪獣砂漠,Monster Dessert)
"Crazy Cake" is an ability derived from "Killer Calories" which involves Oliver conjuring a gargantuan cake-like monster. The monster is sentient and has a large gaping anged mouth and single cycloptic eye in the middle of it's body, it also has several tiers; a set of arms and a large flame on it's head. It has shown the ability to detach it's strawberries that decorate it's tiers and throw them, with them exploding on contact.