Shrine Yggcasil (5e Creature)

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Shrine Yggcasil[edit]

Gargantuan plant, lawful good

Armor Class 20 (natural armor)
Hit Points 388 (21d20 + 168)
Speed 30 ft.

23 (+6) 10 (+0) 27 (+8) 18 (+4) 16 (+3) 13 (+1)

Saving Throws Str +12, Con +14, Int +10
Skills Arcana +10, Athletics +12, Intimidation +7, Perception +9, Religion +10
Proficiency Bonus +6
Damage Resistances poison, necrotic; bludgeoning, piercing, and slashing from nonmagical attacks that aren't adamantine
Condition Immunities frightened
Senses darkvision 120 ft., passive Perception 19
Languages Abyssal, Common, Druidic, Elvish
Challenge 17 (18,000 XP)

Innate Spellcasting. The yggcasil's innate spellcasting ability is Intelligence (spell save DC 18). It can innately cast the following spells, requiring no material components:

At will: circle of death, freedom of movement (self only), plant growth, spirit shroud
3/day each: create undead, mass cure wounds (centered inside its habitable area), speak with dead
1/day each: finger of death, resurrection

Undead Likeness. If an effect would be applied to the yggcasil from a source outside its living shelter, the yggcasil can choose to change its creature type to undead in regards to that effect.

Living Shelter The yggcasil's body contains a habitable area consisting of a 20-foot wide, 10-foot tall square room connected by a ladder to an upper area which is a 15-foot cube. The central space of both areas is occupied by the thick wooden trunk of the yggcasil, which has an AC of 18 and is vulnerable to fire damage. If the yggcasil chooses, it may open a part of its body to allow one or more creatures inside the lower square, then close up again. A creature can enter the upper cube by flying or making a DC 20 Strength (Athletics) check to climb the yggcasil's body.
While in the lower area, a creature has total cover against all effects originating from outside the yggcasil, and while in the upper cube, a creature has half cover to creatures on the ground and can make ranged attacks on creatures outside the habitable area. The yggcasil is aware of everything occurring inside the habitable area as though using tremorsense.
If the yggcasil falls prone, it is instead forced to sit down heavily, but remains upright, and all creatures inside the yggcasil's habitable area must succeed on a DC 13 Dexterity} saving throw or be knocked prone as well. The yggcasil must spend half its movement as normal to stand up again.

Siege Monster. The yggcasil deals double damage to objects and structures.


Multiattack. The yggcasil makes two slam attacks and casts a spell. Alternatively, it can cast two spells.

Slam. Melee Weapon Attack: +11 to hit, reach 15 ft., up to two targets within five feet of each other. Hit: 20 (4d6 + 6) bludgeoning damage.

Set Roots. The yggcasil buries its root-like arms and legs to take in nutrients and heal. The first time the yggcasil does this in a day, it immediately gains the benefits of a short rest, but cannot move, benefit from its freedom of movement spell, cast spells with somatic components, or make slam attacks until it takes an action to uproot itself. If an yggcasil completes a long or short rest while rooted in this manner, it gains temporary hit points until its next rest, the number of which is 11 (2d10) if the rest was short or 33 (3d20) if the rest was long.


Harbor. The yggcasil immediately moves up to three adjacent allies that are Large or smaller and below half their maximum hit points into the lower square of its habitable area. This movement does not provoke any opportunity attacks.


The yggcasil can take 2 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The yggcasil regains spent legendary actions at the start of its turn.

Command. The yggcasil speaks with a powerful voice. One of the yggcasil's allies that it can see and be understood by can immediately make an attack on a target within range or move up to half its movement speed. Alternatively, one of the yggcasil's enemies must succeed on a DC 17 Charisma saving throw or be frightened of the yggcasil until the end of the yggcasil's next turn.
Spell. The yggcasil casts a spell.

Though it resembles a temple to the dead with a tree in the center, this noble monster is quite mobile for its bulk. Named for both the world tree and the forts they tend to resemble, an yggcasil is born when a tree comes to life via druidic magic, and realizing its own weakness, uproots itself to gather power. With a large chunk of earth around the bottom of its trunk, an yggcasil uses its roots as arms and legs to seek out large stones, and attaches them to its trunk to armor itself until eventually, it comes to resemble its final form, a small round castle, with arms and legs underneath made of thick, intertwined roots, and a leafy tree-like head emerging from the top with a pair of eyes on its trunk.

Temple to the Dead. Occasionally, an yggcasil cannot find the high-quality stone it needs to build its armor, and thus its mighty fortitude is dramatically reduced. Those yggcasil forced to endure this will instead grow their trunk's wood outwards into a temple, one in which the spirits of the deceased are summoned and appeased, so as to acquire their blessings for enhancing its defenses and offenses. In this way, so-called shrine yggcasil gain various powers attuned to the realm of the undead, and the monsters that yggcasil are famous for harboring in their structure-like bodies are replaced with undead spirits bound to the yggcasil by its favors to them.

Roving Churches. Though their powers may be deeply entrenched in the undead, shrine yggcasil are as good-natured as their stony cousins. As a shrine yggcasil travels, it will seek out lost spirits and undead to help them move on from the mortal planes, often completing their unfinished business for it, and in the meantime, it will allow travelers, paladins, and clerics to enter its body to pray should they feel the need to, even if it sometimes gets attacked for using undead to make up for its shortcomings.

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