Desire.

*Clank*

A shiver of light appeared as something fell from the book and landed on the floor with a clanking noise.

Isaac crouched and grabbed the item. It was key in the shade of silver, which was surprisingly bright and shiny.

He threw the book about Baba Yaga inside his inventory and went straight towards the cabinet.

He carefully put the key in the keyhole and twisted it until a familiar clinking noise appeared.

*Clink*

Isaac gulped and used the knob to open the cabinet. The first thing he saw was a stack of papers and felt very disappointed, but then on the last shelf, he saw a wooden box with mysterious-looking carvings.

He took it from the cabinet and put it down on the wooden desk. He looked around if he needed another key to open it, but gladly there wasn't a lock.

Without stalling any longer, he opened it, and the moment he did...

Isaac gasped and felt blue liquid trailing down his mouth, staining the floor below him in the color of blue.