Meburningslime's first SCP! :)

SCP-4289
Object Class: Euclid
Scp-3289 should be enclosed in a steel chamber, with double blast doors and an emergency blast door that can lower on the tunnel entrance.
SCP-4289-A is a deep cave, comprised mostly of granite. The entrance of the tunnel has an unnatural darkness, causing all lights to have slightly less than half of their normal luminosity. Four attempts to explore the full size of the cave has been launched, all ended unsuccessful. SCP-4289-A seems to be an endless cave going straight, although the exterior stretches only twenty meters.
SCP-4289-B is a humanoid figure, slightly larger than the average human, and wears a very faded, mid-1900s black suit with leather shoes of the same era.
The entity has a whitish, mask-like face, which is entirely impenetrable.
SCP-4289-B possesses an unprecedented amount of strength, and has been seen to break blast doors within ten seconds, seemingly with little effort. The subject also possesses extremely high intelligence, and even conversed with SCP-049 once.
Every six weeks to five and a half years, SCP-4289-B emerges from the cave and requests an item, seemingly of random order. The item requested must be provided by a level-two foundation personnel or higher. If not provided, SCP-4289-B will breach conatinment and retrieve the item. The entity will always appear at 6 A.M. and will bring the item into the cave at the latest midnight.
The subject can apparently sense and track the nearest requested object, and cannot be tricked by mock items.
The so-far requested items are:
An apple
Human Hair
A 1'x1' piece of silk cloth
A syringe
[REDACTED]
The Cure (Visited SCP-049)
An M4 Rifle
A Modern, [REDACTED] Brand Bouncy Ball
The result of SCP-008 set to fine on SCP-914 (used the names SCPs and their appropriate numbers), which turned out to be a liquid cure to any virus.