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 fire or from a critical hit. On a success, the zombie drops to 1 hit point instead.

Stench of Death. Each creature that starts its turn within 10 feet of the adolescent corpse lily zombie must make a DC 16 Constitution saving throw, unless the creature is a construct or undead. On a failed save, the creature is incapacitated and must spend its turn throwing up. This save can be repeated at the start of every turn. Creatures that are immune to poison damage or the poisoned condition automatically succeed on this saving throw. On a successful save, the creature is immune to the stench of all adolescent corpse lily zombies for 24 hours.

Slam. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 1) bludgeoning damage.

Spore Cloud (Recharge 6). A 10-foot radius of spores extends from the adolescent corpse lily zombie. These spores can go around corners. All creatures within the sphere and any creature that walks into it must succeed a DC 12 constitution saving throw. Creatures that are immune to poison damage or the poisoned condition do not have to make this save. Each creature that fails this save is poisoned for the next hour. This condition can be ended by a lesser restoration spell or similar magic. The cloud is dispersed after 2 rounds, and if it is exposed to an open flame before dispersion, it ignites, causing a DC 13 dexterity saving throw. A creature take 4d6 damage on a failed save and half as much on a successful one.