Deep One (5e Creature)
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Medium monstrosity (deep one), neutral evil
Amphibious. The deep one can breathe both air and water.
Aquatic. While in water, the deep one has advantage on attack rolls against non-aquatic creatures.
Multiattack. The deep one makes two melee attacks with its claws.
Bite. Melee Weapon Attack. +4 to hit, reach 5 ft., One target. Hit: 6 (1d6+3) piercing damage.
Claw. Melee Weapon Attack. +4 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 3) slashing damage. When a target is hit by two claw attacks by the same deep one during its turn, the target is also grappled (escape DC 13). If the target is Medium or smaller, it is also restrained until this grapple ends. While grappling the target, others have advantage on attack rolls against it and the deep one can't use this attack against other targets. When the deep one moves, any Medium or smaller target it is grappling moves with it.
Deep ones are scaled humanoids resembling a cross between frog and fish. They have huge staring eyes and webbed hands and feet. Deep ones live at the bottom of the ocean and worship ancient dark gods. Sometimes, deep ones come to the surface to trade. While deep ones look inhuman, they can produce offspring with humans and a few other humanoid races. Communities trading with deep ones have often made a pact with dark powers and have deep one hybrids among them.