A gleaming form of unknown metal, pulsing with ancient power.
The Tesseract’s frame is composed of a strange crimson metal, shaped seamlessly into a cube within a cube.
The inner cube pulses with a shifting light, while the sides of the outer cube are barriers of energy, solid to the touch. Whosoever holds the cube can hear faint whispers in a language they cannot comprehend, even by magical means. The sides of the cube measure a handsbreadth, but the weight of the artifact is roughly equivalent to that of an iron pot. (10 lbs.)