Challenge Rating 5 to 10 (hard encounters)
_Stunningly tall and beautiful fiends, the heralds of darkness resemble dark-haired fey wearing cloaks and armor glittering with dark light and often surrounded by a nimbus of pale green fire._ Heralds of darkness speak in fluid tones and sing w...
_A corrupting ooze boils and bubbles with rank marsh gas and the fetid stench of the sewer, and it leaves a stinking trail of acidic slime wherever it goes._ **Swim and Walk.** A corrupting ooze is a festering slime that can slither and even swi...
_Eleinomae, or marsh nymphs, are beautiful fey who hold sway over many wetlands, from the chill to the tropical. They wear distinctive dresses fashioned from reeds and water lilies._ **Nets for Travelers.** Eleinomae are cruel and depraved creat...
_Swimming upright, this creature peels itself from the vibrant seascape and strikes with needle-thin claws, shredding teeth, and a wickedly curved stinger._ **Camouflaged Hunter.** Like a piece of moving coral, this drake’s coloration and scale ...
_A large dragon-like creature with black scales and shadowy wings emerges suddenly from the darkness. Its red eyes glare bright as coals, and it speaks in a deep monotone._ **Strange Humor.** Elder shadow drakes are mischievous and greedy. They ...
_Stout bearded warriors with golden auras, the einherjar wear chain mail and carry two-handed battle axes and oaken shields— their badges and symbols are all different, and it is said no two braid their beards quite alike._ As the spirits of war...
_These enormous clouds of orange and green butterflies add a reek of putrefaction to the air, stirred by the flapping of their delicate wings._ **Demon-Haunted.** A death butterfly swarm results when a rare breed of carrion-eating butterflies, d...
_This hulking brass and iron creature resembles a giant suit of plate armor; a constant growl issues from its midsection. It stands 9 feet tall and its squat head wears an angry expression. A clockwork myrmidon always moves with moves with a power...
Medium Aberration, CR 9. From Tome of Beasts.
Medium Humanoid, CR 7. From Tome of Beasts.
_A gnarljak looks like a bear trap springs sprung to clacking life and ready to tear flesh apart._ **Hopping Motion.** All steel and springs, a gnarljak is easily mistaken for a simple bear trap when lying dormant. But once it starts hopping in ...
_At rest, a clockwork abomination resembles a pile of debris and scrap on the ground, but in motion it reveals a large insectoid form with smoke rising between the plates of its hide. Its many orange‑yellow eyes shine like dim lanterns and reveal ...
_When a dune mimic strikes, the sand surges and shifts, a sinkhole opens, and sandy tendrils snatch at nearby creatures._ **Enormous Forms.** Though most commonly seen as dunes, a dune mimic can take the form of a date palm grove, a riverbank, a...
_This tall, bronze-complexioned man is abnormally long-limbed and clad in armor of stained and battered coins. His wiry frame is festooned with mismatched bracelets, rings, and necklaces, each gaudier than the last. The easy smile on his face is c...
_These winged snakes are coastal beasts and sometimes confused with true dragons or wyverns. They are neither, but quite deadly in their own right._ **Searing Acid.** Drakon fangs do not deliver venom; volatile acid constantly burbles up from a ...
Medium Undead, CR 5. From Tome of Beasts.
_The dragon-headed leaves of these oak trees sometimes rustle despite the lack of wind, betraying a hint of their draconic power._ **Gifts among Dragons.** These magnificent trees are imbued with some characteristics of their draconic masters. W...
Large Monstrosity, CR 9. From Tome of Beasts.
_A chelicerae resembles a massive spider perched on tall, stilted legs. Most often, the disheveled body of a robed arcanist swings from its clenched mandibles._ **Feed on Spellcasters.** These massive arachnids are largely confined to the great ...
Medium Undead, CR 6. From Tome of Beasts.
_The bronze and mithral figure advances with heavy movements. Its eye lenses glare dark blue, and gears click when it swings its glaive._ An intricate construction of bronze, steel, copper, and mithral, the gearforged templar is an imposing sigh...
_Hide armor and scraps of mail are nailed onto this scarred and tattooed mole-like beast. A ring of tentacles sprouts above its mouth, which is dominated by spade-like incisors. The beast has no visible ears and only tiny, cataract-filled eyes. Bl...
_A large reptile with a dagger-like teeth and a scaly hide of shifting colors, the gbahali often strikes from close range._ _**Chameleon Crocodiles.**_ While distantly related to crocodiles, gbahali have adapted to life away from the water. To m...
_This twisted humanoid has gray flesh and black claws that drip blood. A bone mask is bound to its head by strips of putrid flesh and a third arm hangs from the right side of the creature’s body, its hand clutching a large sack stained with blood....