Kelpie, Variant (5e Creature)
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Large monstrosity, lawful good
Charge. If the kelpie moves at least 20 feet straight toward a target and then hits it with a tongue attack on the same turn, the target takes an extra 4 (1d6) piercing damage and 4 (1d6) poison damage, and its Constitution saving throw DC increases to 16.
Magic Weapons. The kelpie's weapon attacks are magical.
Multiattack. The kelpie makes two attacks: one with its hooves or water bullet, and one with its horn or uses its Drown action.
Hooves. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage.
Tongue. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 6 (1d6 + 2) piercing damage and 6 (1d6 + 2) poison damage, and must attempt a DC 14 Constitution saving throw. On a failure, the creature is paralyzed for 1 minute. They may retry this saving throw at the end of each of their turns, ending this effect early on a success.
Water Bullet. Ranged Weapon Attack: +7 to hit, range 30/60 ft., one target. Hit: 11 (2d6 + 4) piercing damage or they move 20 ft. away from the kelpie.
Drown (Recharge 5-6). One creature within 30 ft. must attempt a DC 14 Dexterity saving throw. On a failure, they begin to suffocate for 1 minute. They may retry this saving throw at the end of each of their turns, ending this effect early on a success.
Water Shield. The kelpie erects a wall of water around itself or another creature it can see within 60 feet of it. The target gains a +2 bonus to AC until the end of the kelpie's next turn.
Appearing as a combination between a horse and a frog, kelpies use their prehensile tongue to kill any living thing that crosses its path. Despite their relatively dazed look, they are focused killers, paralyzing and drowning anything that crosses their path with their poisonous tongue and advanced water control. While many believe this to be for sustenance, implying them to be predators, they take no pleasure in its success or disappointment at its failure, implying that it attacks out of an insect-like psychological equation.