Here's a d100 chart to help inspire people to modify or build monsters using current monster abilities, PC feats and PC class features.
I like to make some of the elite monsters or leaders of groups more fearsome so sometimes just rolling on here (or choosing one) helps. Plus, I added a section of Combat Maneuvers from the Battlemaster Fighter, which when added to standard melee creatures (humanoid and monster alike) makes them more interesting too. But beware, too many options sometimes makes it harder to run as DM especially if the creature already has options.
Updated January 3, 2017
