Although this phenomena predominantly affects plants and outsiders, all types of creatures can form a strange parasitic relationship with fiendbloom and gain the fiendbloom template. A fiendbloom creature retains all its statistics except as noted below.

Doubletyped. For the purposes of features, spells, and traits, the fiendbloom creature’s type becomes fiend and plant .

Dreaded Winter. The creature loses any resistance or immunity to cold damage. When the fiendbloom creature takes cold damage equal to or greater than its proficiency bonus, its Speed is reduced by 10 feet until the end of its next turn.

Fiendbloom Fireward. The fiendbloom creature gains resistance to fire damage. If the fiendbloom creature was vulnerable to fire damage, it no longer has fire vulnerability.

Hellspore Seeding. When a fiendbloom creature dies it explodes with hellspores in a 30-foot radius. Each creature in the area makes a Constitution saving throw against the fiendbloom creature’s maneuver DC. On a failed save, the creature becomes infected with hellspore blight.

A beautiful but invasive species, fiendbloom is known for being deadly and having an alluring, distinctive pink coloring—and to the learned, the production of deadly hellspores. Hellspore blight occurs when a humanoid comes in contact with fiendbloom or their hellspores, forcing it to make a Constitution saving throw (DC 14 for tier 2 or DC 18 for tier 3). On a failed saving throw, the creature becomes afflicted with the disease, though there are no immediate signs of infection.

At the end of every week and whenever it suffers a level of fatigue from something other than this disease, the infected creature repeats the Constitution saving throw or suffers a level of fatigue. 1 After three failures, the infected creature is permanently polymorphed into an immobile soultree.

Soultree. This tree is initially covered in fragrant pink flowers and has lush lime green leaves, but soon after blossoming it becomes withered and starved, its thin branches stretched outward almost like arms. Recognizing the face of the petrified victim within a withered soultree for what it is (rather than knots and burls) requires a DC 16 Perception check, but spotting one blossoming with fiendbloom requires only a DC 15 Arcana, Nature, or Religion check.

When a soultree is damaged (AC 13, 12 hit points) its bark shears away and emits a screaming noise in a 30-foot radius. Each creature in the area makes a DC 14 Wisdom saving throw or becomes frightened of the soultree for 1 minute. A frightened creature repeats the saving throw at the end of each of its turns, ending the effect on itself on a success. When it succeeds on a saving throw or the effect ends for it, a creature is immune to that soultree’s scream for 24 hours. Should the wood from a destroyed soultree be burned, the soul of the transformed creature is drawn into the Fey Flower in Spinnelund. Afterwards the transformed creature cannot be brought back to life through any means short of a wish spell.

Hellspore blight can only be cured before an infected creature transforms into a soultree. Curing hellspore blight with mundane methods or magic requires a Medicine check or spellcasting ability check (DC 14 for tier 2 or DC 18 for tier 3). A blueheart potion automatically cures a creature infected with hellspore blight.

Some creatures have an aura of undeath, evil, or corruption so strong it influences even remote, magical attempts to see them. When a divination spell is used to remotely view, hear, or gather information about the creature (such as divination , legend lore , locate creature , and scrying ) the caster makes a spellcasting ability check (DC 17 + 2 per previous check in the last week). On a success, the spell works as normal, but the caster takes 24 (7d6) necrotic damage. On a failure, the caster instead catches a glimpse of a necromantic hellscape, takes 24 (7d6) necrotic damage, and suffers a level of strife . Regardless of the check’s result, the caster makes a DC 17 Constitution saving throw at the end of each of its turns. After three successes the caster resists divination rot, or after three failures it contracts the flesh-rotting disease and it lasts for 7 days.

A creature infected with divination rot has disadvantage on Charisma checks and becomes vulnerable to all damage. Spells or magical effects that remove disease cure divination rot.