d20

Dice with 20 sides.

The D20 is the backbone of D&D. It determines how effective your attacks are in combat, as well as the initiative order in which you attack. It will also determine how skilled you are in a particular action. It can be your best friend at times, allowing you to sneak past that guard you are trying to avoid. It can also be your worst enemy, making you trip, stumble and fall flat on your face in front of that guard.

The D20 can change the course of your entire campaign with a single roll.