Creatures

 Tundra

 Desert
 * Ice Mephit (CR ½)
 * Remorhaz (CR 5-11)
 * Yeti (CR3, 9)
 * Winter Wolf (CR3)

 Forest
 * Carrion Crawler (CR2)
 * Genies (CR11)
 * Grick (CR2&7)
 * Jackalwere (CR ½)
 * Lamia (CR4)
 * Dust Mephit (CR ½)
 * Purple Worm (CR 15)
 * Thri-kreen (CR1)
 * Wyvern (CR6)
 * Death Dog (CR1)

 Plains
 * Blights (CR 1/8-1/2)
 * Bullywug (CR1/4)
 * Dryad (CR1)
 * Satyr (CR ½)
 * Sprite (CR ¼)
 * Treant (CR9)
 * Unicorn (CR5)
 * Awakened Tree (CR2)

 Rocky/steampunk
 * Ankheg (CR2)
 * Centaur (CR2)
 * Cyclops (CR6)
 * Gnoll (CR 1/2-4)
 * Deep Gnome (CR ½)
 * Peryton (CR 2)
 * Roc (CR 11)
 * Unicorn (CR5)

 Volcano
 * Earth Elemental (CR5)
 * Ettin (CR4)
 * Galeb Duhr (CR6)
 * Modrons (CR 1/8-2)
 * Shield Guardian (CR7)
 * Xorn (CR5)

 Sea
 * Fire Elemental (CR5)
 * Duergar (CR1)
 * Magmin (CR1/2)
 * Magma Mephit (CR1/2)
 * Salamander (CR 1,5)

 Jungle
 * Aboleth (CR10)
 * Dragon Turtle (CR17)
 * Water Elemental (CR5)
 * Kraken (CR23)
 * Merrow (CR2)
 * Sahuagin (CR 1/2-5)

 Oriental
 * Displacer Beast (CR3)
 * Lizardfolk (CR 1/2-4)
 * Nagas (CR 4-10)
 * Shambling Mound (CR5)
 * Yuan-Ti (CR1-7)
 * Flying Snake (CR 1/8)

 Caves
 * Couatl (CR4)
 * Rakshasa (CR 13)

 Shrubland
 * Fomorian (CR8)
 * Fungi (CR 0-1/2)
 * Ettercap (CR2)
 * Darkmantle (CR1/2)
 * Cloaker (CR8)
 * Rust Monster (CR 1/2)
 * Beholders (CR3, 13, 14)
 * Myconids (CR 0-2)
 * Stirge (CR 1/8)
 * Umberhulk (CR5)


 * Jackalwere (CR 1/2)
 * Thri-kreen (CR1)
 * Awakened Shrub (CR 0)
 * Axe Beak (CR ¼)
 * Blink Dog (CR ¼)
 * Death Dog (CR1)