public decimal RollEstimation() => PoolDice.Aggregate((decimal)1, (x, y) => x * Convert.ToDecimal(Math.Pow(y.Die.DieFaces.Count, y.Quantity)));
public override string ToString() => string.Join(", ", PoolDice.OrderBy(o => o.Die.Name).Select(group => $"{group.Die.Name} {group.Quantity}").ToList());
