Certain Spells, magic items, Class Features, and other Effects in the game interact in Special ways with creatures of a particular type. TypeA monster’s type speaks to its fundamental Nature. Keep in mind that Modifying a Monster, including when you apply a template to it, might change its Challenge Rating. Feel free to tweak an existing creature to make it into something more useful for you, perhaps by borrowing a trait or two from a different monster or by using a variant or template, such as the ones in this book. Modifying CreaturesDespite the Versatile collection of Monsters in this book, you might be at a loss when it comes to finding the perfect creature for part of an adventure.
Table: Size Categories shows how much space a creature of a particular size controls in Combat. SizeA monster can be Tiny, Small, Medium, Large, Huge, or Gargantuan. A monster’s statistics, sometimes referred to as its stat block, provide the essential information that you need to run the monster.