This form allows you to roll virtual dice. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number Missing: fighter.
The standard d20 combat rules intentionally ignore the direction a creature faces. This means that a Medium creature standing in a given square has eight those on the rear corners); and their flanks remain the squares directly to their sides. Because the fighter is in her flank area, he gets a +2 bonus on the attack roll.
With it, you can experience adventure as a hero fighting against the forces of evil! So a rule asking you to “ roll d20” means, “ roll a twenty- sided die.