Rolls as a d4 or a d6 or a d8.
This die is based on the shape Pentagonal Icositetrahedron, which is a Catalan Solid without parallel faces. When the die lands, a vertex will be straight up with three faces around it. Each face will give a result for a different die. Only one die's result can be determined per roll.
In order to use this die, first decide which one die roll you need (d2 or d4 or d8). Then roll the die and read the result as follows:
Since this shape is isohedral, this should be a fair die.
I also offer other multi-dice in my shop.
For a version of a Pentagonal Icositetrahedron shaped die that rolls 1 through 24, please check out ppoz's D24 Pentagonal Icositetrahedron