Mawloc (5e Creature)

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Gargantuan monstrosity (tyranid), chaotic neutral

Armor Class 23 (natural armor)
Hit Points 492 (25d20 + 230)
Speed 60 ft., burrow 80 ft., swim 40 ft.

28 (+9) 24 (+7) 30 (+10) 10 (0) 18 (+4) 4 (-3)

Saving Throws Str +16, Dex +14, Con+17, Int +7, Wis +11
Skills Perception +11, Survival +7
Damage Immunities poison, psychic; piercing, slashing, and bludgeoning from nonmagical attacks
Condition Immunities charmed, deafened, blinded, frightened, poisoned, prone
Senses Tremorsense 1/2 mile, telepathy 300 ft., passive Perception 21
Challenge 23 (50,000 XP)

Magic Resistance. The mawloc has advantage on saving throws against spells and other magical effects.

Inscrutable. Tyranids are immune to any effect that would sense its emotions or read its thoughts, as well as any divination spell that it refuses.

Synaptic Web. A Tyranid Warrior can command and coordinate other Tyranids within a 120 ft. radius. Mawloc's are susceptible to this.

Hypersensitivity. Mawlocs can feel the vibrations of a lively heartbeat while they are traveling well underneath the surface of solid or liquid matter. They are never blind to the location of a target unless there are none.


Multiattack. A mawloc makes three bite attacks until it takes a Swallow action. It then replaces its bite with its tail for the same number of attacks until the swallowed creature dies or escapes.

Bite. Melee Weapon Attack: +16 to hit, reach 10 ft., one target. Hit: 27 (4d8 + 9) piercing damage. If the target is a creature, it is grappled (escape DC 20). Until this grapple ends, the target is restrained, and the mawloc can't bite another target.

Tail bash. Melee Weapon Attack. +16 to hit, reach 15 ft., one target. Hit. 35 (4d12 + 9) bludgeoning damage. Regardless of a hit, the mawloc chooses another target within 5 feet of the original, determined before attacking, to strike for reduced damage. That secondary target makes a DC 20 Dexterity saving throw, taking half damage dealt to the original target on a failed save and none on a success.

Swallow. The mawloc 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 mawloc, and it takes 42 (12d6) acid damage at the start of each of the mawloc's turns. If the mawloc takes 60 damage or more on a single turn from a creature inside it, the mawloc 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 mawloc. If the mawloc dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 30 feet of movement, exiting prone.


The Mawloc can take 3 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 Mawloc regains spent legendary actions at the start of its turn.

Move. A Mawloc can move up to half of its movement.

Attack. A Mawloc can make a bite action.

Burrow (2 Actions). A Mawloc can tunnel into the ground up to half of its movement.

A Mawloc breaching enemy lines from underneath.

A Mawloc is a huge, worm-like Tyranid organism that acts as an outrider for a Tyranid swarm. They are burrowing creatures that travel deep underground to bypass enemy defences and then emerge behind enemy lines to run rampant through supply lines, command posts, or artillery batteries, only to vanish back underground to evade retaliation. Severe earth tremors are the only warning of a Mawloc attack.

Physically, the Mawloc is an incredibly simple organism with most of its known bio-morphs geared solely towards burrowing into the earth where possible. It has six incredibly powerful limbs employed to gain traction underground, but they are small and lack the reach to be efficient in combat. Instead, it attacks by swallowing prey whole with its massive razor-toothed maw, or it pounds larger foes flat with its muscular tail before eventually devouring them as well. These victims are often digested within its stomach over several long days. Despite its immense size and mass, a Mawloc is incredibly agile and able to weave through incoming fire with fluid grace.

A Mawloc is almost entirely blind, and relies on a series of pressure-sensitive organs that run the length of its flank, which provide the Mawloc with a many-layered and ever-changing picture of the world around it. A Mawloc's senses are so delicate that it can absorb and interpret pressure waves as they travel through both solid and liquid matter. Mawlocs are able to detect even the slightest tremor, and intercept their quarry with unerring speed and accuracy. Added together, these qualities allow a Mawloc to home in on its prey even whilst burrowing through ground. The more regular and rhythmic the sound, such as the pounding thump of a terrified heart, the more likely a Mawloc will be able to orientate itself underground into emerging precisely beneath its prey. Thus it is a victim's fear that ultimately dooms them.

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