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Chapter 2: Tools / Building Creatures

Alignment, Size, and Traits

Source Gamemastery Guide pg. 58
Fill out the trait line of your creature’s stat block. The alignment can be whatever suits your story, though some types of creatures must be or tend to be certain alignments. Creatures can be whatever size you need them to be, though you seldom find Large creatures below 1st level, Huge creatures below 5th level, or Gargantuan creatures below 10th level. Generally, you don’t automatically adjust statistics for size, except for an exception to Strength modifiers for Large and bigger creatures, which you’ll find in Ability Modifiers on the next page.

Your creature will almost certainly have one of the following traits to define its type: aberration, animal, astral, beast, celestial, construct, dragon, elemental, ethereal, fey, fiend, fungus, giant, humanoid, monitor, ooze, plant, or undead. If you’re making a creature from an existing category of a type, such as demon, it also has that category as a trait. Creatures with a close affinity to elements—air, earth, fire, and water—or types of energy—like acid, cold, and electricity—have those traits.

Some abilities typical of creatures with the traits listed above can be found in Trait Abilities on page 70. As with the other steps, looking at similar creatures will give you an idea of what traits to use.

Add any traits that have detailed rules attached to them, like amphibious, aquatic, incorporeal, mindless, and swarm. You can add traits related to the creature category, such as dinosaur or werecreature, but most of these traits are pretty self-evident in play. If at any point you realize during play that you didn’t add a trait the creature really should have, you can usually apply it retroactively.