Flinthusk (5e Creature)
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Medium undead, neutral evil
Sharp Body. The flinthusk's melee attacks deal 1d6 extra slashing damage (included in the attacks). Any creature that begins its turn grappling the flinthusk takes 3 (1d6) slashing damage.
Spider Climb. The flinthusk can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Stench. Any creature that starts its turn within 5 feet of the flinthusk must succeed on a DC 10 Constitution saving throw or be poisoned until the start of its next turn. On a successful saving throw, the creature is immune to the flinthusk's Stench for 24 hours.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 2) piercing damage + 3 (1d6) slashing damage.
Earth Tremor (Recharge 6). The flinthusk slams the ground with its fists, creating a miniature earthquake in a 20-ft. radius centered on itself. Every creature in that area must make a DC 15 Dexterity saving throw. On a failed save, a creature takes 14 (3d8) bludgeoning damage and is knocked prone. On a successful save, a creature takes half as much damage and isn't knocked prone. Damage inflicted by this attack is considered magical for the purposes of overcoming resistances and immunities.
Made from elemental magic mixed with necromancy, a flinthusk can only be created from a humanoid that died by falling off a rocky cliff or into a ravine. Jagged, razor-sharp stones protrude from the dirt-caked flesh of a flinthusk, each one embedded deep into its skin and causing it to bleed out. Its eyes are as glassy as two dark jewels. The penetrating smell of rotten meat mixed with foul earth emanates from a flinthusk, causing pain to all who breathe it in. The undead menace can shake the earth around it with a pound of its stone-bladed arms, potentially knocking the opposition right off their feet.
Undead Nature. A flinthusk doesn't require food, drink, air, or sleep.