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.

Chloroplast Plate. The fungal zombie is entombed by large chitin plates of hardened bone mass and plant fibers, giving the zombie +2 to its armor class. (included)

Piercing Thorns. The fungal zombie has large spines wrapping around its body providing the zombie with an additional damage die on attacks. (included)

Infested. The carrier form is infested with toxic and highly contagious spores. Whenever a creature takes poison damage from the form. They must make a DC 14 Constitution saving throw, becoming infected by the spores on a failed save. Creatures immune to disease are immune to this effect. The spores invade the creature's system, killing it in a number of hours equal to 1d12 + the Constitution score of the creature. If the creature is killed by the disease, they raise as a fungal zombie under the control of the blight. 

Multiattack. The carrier makes two tendril attacks. If both of the tendrils hit a creature, the form can launch itself up to 10ft. toward the target and make a Maw attack against them as a bonus action. 

Maw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d10+3) piercing damage, plus 7 (2d6) poison damage. 

Grasping Tendril. Melee Weapon Attack: +5 to hit, reach 15 ft., one target. Hit: 11 (3d6+1) piercing damage. 

Rupturing Death. Once the zombie drops to 0 hit points it can use its reaction to move half of its movement speed and then explode. All creatures within a 10 ft. radius must make a DC 14 constitution saving throw, taking (4d10) poison damage and becoming poisoned for 1 minute. Or half the damage and averting the poisoning on a successful one.