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Gargantuan construct, neutral

Armor Class 16 (natural armor)
Hit Points 435 (30d20 + 120)
Speed 10 ft., fly 50 ft.

23 (+6) 10 (+0) 18 (+4) 2 (–4) 15 (+2) 1 (–5)

Damage Immunities fire, poison, psychic; bludgeoning, piercing, and slashing from nonmagical weapons that aren’t adamantine
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses darkvision 60 ft., passive Perception 12
Languages understands the languages of its creator but can’t speak
Challenge 14 (11,500 XP)

Special Traits

  • Immutable Form. The amalgamation is immune to any spell or effect that would alter its form.
  • Item Use. The amalgamation can use any of the items contained within its bulk. Items with limited uses, such as potions, scrolls, or wands, are expended normally.
  • Magic Resistance. The amalgamation has advantage on saving throws against spells and other magical effects.
  • Magic Weapons. The amalgamation’s weapon attacks are magical.
  • Swarm Attack. The amalgamation can occupy another creature’s space and vice versa, damaging the creature with the flying weapons and objects composing its bulk. Any creature that starts their turn in the same space as the amalgamation must succeed on a DC 18 Dexterity saving throw or take 21 (6d6) slashing damage.


  • Multiattack. The amalgamation makes four melee attacks.
  • Sword. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 6) slashing damage.
  • Mace. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 15 (2d8 + 6) bludgeoning damage.
  • Slam. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 19 (3d8 + 6) bludgeoning damage.
Section 15: Copyright Notice

Rappan Athuk © 2018, Frog God Games, LLC; Authors Bill Webb, Clark Peterson, Skeeter Green, Tom Knauss, Lance Hawvermale, WDB Kenower, Casey Christofferson, and Greg Raglund; based on the original creation of Bill Webb.