Hi, looking in Bestiary 2 page 220, the Radiant Warden has two attacks; a melee attack with reach 15 feet, and a ranged attack with reach 15 feet.
Is this a mistake? What should the range increment of its radiant beam be?
It's definitely a mistake of some type, since Reach isn't applicable to a ranged attack. Being intended to have a range increment of 15ft is possible, but I'd expect longer, looking at the 50ft cone option.
50ft or longer sounds right; a ranged weapon with an increment the same as the melee weapon's reach sounds incredibly counter-intuitive.