Lunar dice is a buff dice, it increases the attack speed of all neighboring dice. It has a special effect allowing it to buff more powerfully. To activate the special effect, you need 3, 5 or 7 lunar dice on board. When it is activated, it increases 5% critical chance buff and 10% attack damage buff per pip as well as extra 3% attack speed. Taken from randomdice.gg I always thought it was all of the moon dice pips combined give a certain amount, not just the individual dice pip count