Beedle & Grim's Dice Set: Game Master
You are the Game Master. These are your dice. You are equal parts researcher, cheerleader, rules mediator, actor, and storyteller.
Nestled within this tin are 16 dice. That includes your primary set in one color, a secondary set in another for multiple enemies attacking at once, and two special d20s for when every creature on the battle map needs to ROLL INISH!