Zdzisław Beksiński's Lost Painting

Origin
Zdzisław Beksiński was a Polish painter, photographer, and sculptor who specialized in dystopian surrealism. Some of his notable works involved architecture being formed from organic materials such as fungi or emaciated human bodies. He sited classical music as his primary inspiration; as he despised silence, he always played either classical or rock music as he worked. Before he moved to Warsaw in 1977, he burned a selection of his paintings and left no documention, as some were either unsatisfactory or "too personal".

Effects
When classical music is played around the painting, large red tentacles will emerge and latch onto the nearest support. From the tentacles and portrait itself, objects and architecture around them will slowly begin to transform into various biological materials such as fungi, skeletal remains, etc. It is also capable of causing "atmospheric" shifts, making the environment look and feel dystopian with a distinct haze, colors, and overall feelings. The painting is also able to make its own formations from the same material; if left unchecked, it's possible for it to create an entire "castle", with itself in the epicenter.

It has also been noted that it can be heard making its own music, often haunting versions of real classical compositions.

Collection
This painting was collected by agent Nielson a few days after Beksiński's death. It was found in a locked closet, covered by a black sheet, and buried under several other objects. It is speculated that it became an artifact sometime around the burning of his works, and survived the flames, where Beksiński then kept it hidden so as to prevent it's discovery or activation.