Void Colossus (Greyhaven Variant)
Gargantuan aberration, chaotic evil (see note)
The Void Colossus beneath Greyhaven is not a standard Void entity. It is an aspect of Verath, the Grey Mediator, consumed by the Void during the Sundering nine hundred years ago. A golden core of divine consciousness persists within the Void shell. The Colossus has been kneeling beneath Greyhaven since the Sundering, reaching upward toward the Sunwell, consuming divine energy to prevent the Void from consuming the last fragment of Verath's consciousness within it.
Armor Class:20 (natural armour)
Hit Points:310 (20d20 + 100)
Speed:40 ft.
Challenge:CR 17
STR
26 (+8)
DEX
10 (+0)
CON
20 (+5)
INT
6 (-2)
WIS
16 (+3)
CHA
18 (+4)
Saving Throws:STR +14, CON +11, WIS +9, CHA +10
Skills:Perception +9
Damage Resistances:Bludgeoning, piercing, slashing from nonmagical attacks
Damage Immunities:Cold, necrotic, poison
Condition Immunities:Charmed, exhaustion, frightened, paralysed, petrified, poisoned, prone
Senses:Truesight 120 ft., passive Perception 19
Traits
Reality Erosion Aura. The Colossus warps space within 30 feet. Creatures that start their turn in the aura must succeed on a DC 18 CON save or take 14 (4d6) cold damage and have their speed halved until the start of their next turn. The aura extinguishes nonmagical light sources and suppresses magical light of 3rd tier or lower.
Immutable Form. The Colossus is immune to any spell or effect that would alter its form.
Magic Resistance. The Colossus has advantage on saving throws against spells and other magical effects.
Siege Monster. The Colossus deals double damage to objects and structures.
Void Consumption. When the Colossus deals cold or necrotic damage to a creature, it regains HP equal to half the damage dealt.
Golden Core (pre-Severance only). While the golden core persists, the Colossus does not attack unless provoked. Its attention is focused on the Sunwell above. If forced into combat in this state, reduce its HP to 230, remove the Void Consumption trait, and remove Legendary Actions.
Psychic Emanation. The Colossus broadcasts emotional states in a 300-foot radius. Creatures within range experience the Colossus's current emotional state as an overlay on their own emotions. This is not a charm effect; it is informational.
Actions
Multiattack. The Colossus makes two Void Slam attacks and uses Void Gaze.
Void Slam. *Melee Weapon Attack:* +14 to hit, reach 15 ft., one target. *Hit:* 22 (4d6 + 8) bludgeoning damage plus 14 (4d6) cold damage.
Void Gaze (Recharge 5-6). The Colossus targets one creature it can see within 60 feet. The target must succeed on a DC 18 WIS save or take 36 (8d8) psychic damage and be stunned until the end of its next turn. On success: half damage and not stunned.
Stomp. *Melee Weapon Attack:* +14 to hit, reach 5 ft., one target. *Hit:* 30 (4d10 + 8) bludgeoning damage. If the target is a creature, it must succeed on a DC 22 STR save or be knocked prone.
Legendary Actions
The Colossus can take 3 legendary actions per round (Severance path only), at the end of another creature's turn. It regains spent legendary actions at the start of its turn.
Detect. The Colossus makes a Perception check.
Slam (costs 2 actions). The Colossus makes one Void Slam attack.
Reality Pulse (costs 3 actions). Each creature within 30 feet must make a DC 18 CON save. On failure: 21 (6d6) cold damage and pushed 15 feet away. On success: half damage and not pushed.