Basilisk Zombie (5e Creature)
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Medium undead, neutral evil
Petrifying Gaze. If a creature that isn't undead starts its turn within 30 feet of the zombie and the two of them can see each other, the zombie can force the creature to make a DC 12 Constitution saving throw if the zombie isn't incapacitated. On a failed save, the creature magically begins to turn to stone and is restrained. It must repeat the saving throw at the end of its next turn. On a success, the effect ends. On a failure, the creature is petrified until freed by the greater restoration spell or other magic.
Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) piercing damage.
Dead basilisks are rare, and reanimated basilisks are rarer. Their already ponderous speed is reduced to a lumbering plod by their decaying muscles, and their vicious fangs no longer drip venom. Though their cursed eyes have rotted away, their sockets now burn with the light of necromantic power.