Just a thought I had. Given that most humanoid monsters in MM1 will probably have several entrys stated out (minion, melee combatant, ranged combatant, etc.) will the flind make an appearence. Although it is technically a subspecies of gnoll, being slightly shorter and stockier IIRC, the only thing that really differentiated them has their flindbar and its accosiated weapon style.
So how likely will do you think it be that flind makes it into the first MM?
So how likely will do you think it be that flind makes it into the first MM?