Gringotts
The imp looked over his table at Harry, and then glanced over to Orval.
"and you?" he asked, at least Orval assumed it was a he. Its voice was frail, but still resigned a sense of authority.
"I wish to also enter my vault, number…" Orval replied,
"542" answered M.A.C.
"542" Orval completed. He then noted that M.A.C was uploading something it looked like a key, and instructions on how to grow it from the biomec, which he proceeded to do.
"and your keys please" the imp continued, answering what the key was for. Orval grew the key, made of wood, out of sight in his pocket, and gave it to the imp, Harry also handed his key to the imp who examined them both and handed them back. He then waved and another imp walked towards him. This one was much younger and his voice much sharper and fuller.
"come along then let's not take too long" he said, and he led towards some sort of mine cart. Complete with some kind of engine and system. "Hope on now and hold tight, we don't want to get separated or else you'll starve down there"
Orval never liked heights when he was alive, but being dead was a different story. He couldn't see the bottom and the abyss seemed infinite, the tracks seemed to shaped like a roller coaster for whatever reason. He never liked roller-coasters before either. Orval nevertheless climbed into the mine cart, it was awfully cramped, with no seatbelt. Uh-oh.
At this moment the cart went speeding down the track at breakneck speed, the wizards were fans of suicidal vehicles it seemed. The track threw them around constantly, by this point Orval had decided not to shout and scream, he had learned that they wouldn't care and though aggravating he decided not to raise the point.
After 30 seconds of constant hell the cart came to an abrupt stop, the imp climbed out of the cart and he followed suit, in front was a huge door of solid steel, it was clearly designed with a mixture of aesthetic and practical value in mind. The door appeared to have a large dragon carved into it, sleeping a mound of gold, on the door there was some sort of poem, beyond Orval's interest to read yet it appeared to be some sort of warning to thieves.
Upon the door there was a lock, disproportionate to the size of the vault it became clear to Orval that this was what M.A.C had downloaded the blueprints for, he stuck his hand in his pocket to disguise the morphing of his hand into a key, the key the made of ebony and was incredibly dense to compensate for its wooden structure, the key then broke off and his hand regrew, he then gave the key to the imp you placed it into the vault door. Immediately it began to move back, with a force that a simple action could not have provided. As the vault began to creep open he saw mountains of gold all belonging to him, Harry seemed impressed and yet Orval had nothing to do with it. So he scooped it up and put it in a bag.