This twelve sided die can be used to keep tack of the loyalty points of your planeswalker cards in Magic: the Gathering.
The die measures about 20 mm (0.8 inch) from side to side, and about 25 mm (1 inch) from point to point. When printed in steel, it weighs about 16 grams. The design of this die is well balanced and gives a fair roll.
I have also designed a six sided planeswalker loyalty counter, which is available here. For other options, please have a look at the MTG category in my shop.