Gargantuan monstrosity, unaligned

Armor Class 15 (natural armor)
Hit Points 248 (16d20 + 80)
Speed 20 ft., fly 120 ft.

28 (+9) 10 (+0) 20 (+5) 10 (+0) 10 (+0) 9 (-1)

Saving Throws Dex +4, Con +9, Wis +4, Cha +3
Damage Immunities lightning, thunder
Skills Perception +4
Senses passive Perception 14
Challenge 13 (10,000 XP)

Special Traits

  • Keen Sight: The thunderbird has advantage on Wisdom (Perception) checks that rely on sight.
  • Storm Rider. The thunderbird is continuously surrounded by stormy weather, as if it had cast control weather, making all weather conditions within 5 miles one step more severe and all conditions within 500 feet two steps more severe. Its movement and senses are never impeded by wind, fog, rain, snow, or other weather effects. If the thunderbird is killed, these stormy weather conditions persist for 1d6 days centered on the site of its death.


  • Multiattack: The thunderbird makes two attacks: one with its beak and one with its talons.
  • Beak: Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 27 (4d8 + 9) piercing damage.
  • Talons: Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 23 (4d6 + 9) slashing damage, and the target is grappled (escape DC 19). Until this grapple ends, the target is restrained, and the roc can’t use its talons on another target.
  • Thunderstrike. All of the thunderbird’s melee attacks deal 7 (2d6) lightning and 7 (2d6) thunder damage in addition to their normal damage. In addition, if the thunderbird hits a creature two or more times in one round, that target must make a DC 18 Constitution saving throw, being stunned for 1 round on a failed save, or deafened for 1 round on a success. If the thunderbird hits with all three attacks in one round, the target must make a DC 18 Dexterity saving throw or be blinded for 1 round. reactions
  • Thunderflash. When the is struck in melee with a metal weapon, the attacker takes 7 (2d6) lightning and 7 (2d6) thunder damage and must make two saving throws as the thunderbird’s thunderstrike ability, as if struck by three attacks in the same round.


This immense raptor unleashes a shrill cry as it bares its talons, each large enough to carry off a horse.

Section 15: Copyright Notice

Legendary Planet Adventure Path (5E) © 2020, Legendary Games; Authors: Matt Goodall, Jim Groves, Steven T. Helt, Tim Hitchcock, Jason Nelson, Richard Pett, Tom Phillips, Mike Shel, Neil Spicer, Mike D. Welham

This is not the complete section 15 entry - see the full license for this page