Trionyx (5e Creature)

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small swarm of tiny fiends, chaotic evil

Armor Class 15 (natural armor)
Hit Points 68 (8d10+24)
Speed 30 ft, swim 30

18 (+4) 10 (+0) 15 (+2) 7 (-2) 7 (-2) 4 (-3)

Damage Vulnerabilities
Damage Resistances bludgeoning
Damage Immunities fire, acid, lightning
Condition Immunities paralyze, exhaustion, stun
Senses passive Perception X 14
Challenge 5 (1,800 XP)

Hellspawn. Due to its blood, cold as the ice of Hell, the trionyx cannot be ignited by any means.

Appetite. The trionyx's size is no hamper on its biting capabilities and it can use its Swallow on up to two sizes larger than itself.

Leader. If the trionyx makes an attack, it may use it's bonus action on the same turn to issue a Command


Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 22 (4d6 + 8) bludgeoning damage.

Command. The trionyx uses an action to give a wild cry. All of the Spawn who hear the command gain advantage in attack rolls.

Swallow. The trionyx makes one bite Attack against a Large or smaller creature it is Grappling. If the Attack hits, the target takes the bite's damage, the target is swallowed, and the grapple ends. While swallowed, the creature is Blinded and Restrained, it has total cover against attacks and other effects outside the trionyx. If the trionyx takes 30 damage or more on a single turn from a creature inside it, the trionyx must succeed on a DC 20 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of the trionyx. If the trionyx dies, a swallowed creature is no longer Restrained by it and can escape from the corpse by using 30 feet of Movement, exiting prone.


Shell (1/day). If the trionyx is hit by a mundane ranged attack, the trionyx may use its reaction to halve the damage dealt.


The Trionyx can take 1 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The Trionyx regains spent legendary actions at the start of its turn.

Spawn. By using one action, the trionyx can reproduce and spawn a sea turtle. This spawned creature is obedient to the trionyx's Command and acts on its own turn.


This creature, bought out to our universe by magical means, is a eating, killing machine. It exists only to spawn and conquer and eternally reproduce until nothing is left in its razing path

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