Purchased this die from a hobby/tabletop store yesterday, mainly because I thought it looked cool, and that it was funny that it was so hard to read the faces:
I was passively rolling the die, and noticed that my rolls were all very low. Checking the faces, I found that this was actually a d10 with twenty sides and two instances of each number, 0-9.
Is there a name for a die like this? Would I be able to purchase another, possibly with sides 10-20?