Custodian
Huge • Construct • Lawful Neutral
Armor Class 20
Hit Points 283 (21d12 + 147)
Speed 40 ft.
Initiative +5 (15)
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 26 (+8) | 9 (-1) | 24 (+7) | 14 (+2) | 10 (+0) | 9 (-1) |
Skills History +14, Perception +12
Damage Immunities poison, psychic
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses truesight 30 ft., darkvision 300 ft., passive Perception 22
Languages understands all languages but can’t speak
CR 18 (XP 20,000; PB +6)
Immutable Form. The custodian can't shape-shift.
Limited Magic Immunity. The custodian can't be affected or detected by spells of 3rd level or lower unless it wishes to be. It has advantage on saving throws against all other spells and other magical effects.
Limited Telepathy. The custodian can magically transmit simple messages and images to any creature within 30 feet of it that can understand a language. This form of telepathy doesn't allow the receiving creature to telepathically respond.
Protective Glyphs. The custodian can cast glyph of warding (level 6, explosive rune with psychic damage) at will, requiring no material components and using Constitution as spellcasting modifier (spell save DC 21). It can only have a total of four glyphs active at the same time this way. If the custodian creates a fourth glyph, the first glyph vanishes.
Unusual Nature. The custodian doesn't require air, food, drink, or sleep.
ACTIONS
Multiattack. The custodian makes two Slam and two Arcane Beam attacks. It can replace both Arcane Beam attacks with a use of Information Overload, if available.
Slam. Melee Weapon Attack: +14, reach 10 ft. Hit: 34 (4d12 + 8) bludgeoning damage.
Arcane Beam. Ranged Spell Attack: +13, range 120 ft. Hit: 22 (4d10) force damage. Being within 5 feet of a hostile creature doesn't impose disadvantage on this attack.
Information Overload (Recharge 5-6). Intelligence Saving Throw: DC 21, each creature of the custodian's choice in a 20-foot emanation originating from the custodian. Failure: The target becomes stunned. Success: The target has disadvantage on attack rolls and ability checks until the end of its next turn.
BONUS ACTIONS
Adjust Size. The custodian magically shrinks to Medium or Large size or assumes its original Huge size. Its statistics are the same in each form, except its size and its melee reach, which is reduced to 5 feet while being Medium or Large. Any equipment it is wearing or carrying isn't transformed.
Summon Servants. The custodian casts unseen servant. While a servant is within 300 feet of the custodian, it can communicate with them telepathically, and the custodian shares their senses. The custodian can have a maximum of 15 servants at a time.
Custodian
Huge • Construct • Lawful Neutral
Armor Class 18
Hit Points 225 (18d12 + 108)
Speed 40 ft.
Initiative +4 (14)
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 24 (+7) | 9 (-1) | 22 (+6) | 14 (+2) | 10 (+0) | 9 (-1) |
Skills History +12, Perception +10
Damage Immunities poison, psychic
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses truesight 30 ft., darkvision 300 ft., passive Perception 20
Languages understands all languages but can’t speak
CR 15 (XP 13,000; PB +5)
Immutable Form. The custodian can't shape-shift.
Limited Magic Immunity. The custodian can't be affected or detected by spells of 2nd level or lower unless it wishes to be. It has advantage on saving throws against all other spells and other magical effects.
Limited Telepathy. The custodian can magically transmit simple messages and images to any creature within 30 feet of it that can understand a language. This form of telepathy doesn't allow the receiving creature to telepathically respond.
Protective Glyphs. The custodian can cast glyph of warding (level 5, explosive rune with psychic damage) at will, requiring no material components and using Constitution as spellcasting modifier (spell save DC 19). It can only have a total of three glyphs active at the same time this way. If the custodian creates a fourth glyph, the first glyph vanishes.
Unusual Nature. The custodian doesn't require air, food, drink, or sleep.
ACTIONS
Multiattack. The custodian makes two Slam and two Arcane Beam attacks. It can replace both Arcane Beam attacks with a use of Information Overload, if available.
Slam. Melee Weapon Attack: +12, reach 10 ft. Hit: 34 (3d12 + 7) bludgeoning damage.
Arcane Beam. Ranged Spell Attack: +11, range 90 ft. Hit: 16 (3d10) force damage. Being within 5 feet of a hostile creature doesn't impose disadvantage on this attack.
Information Overload (Recharge 6). Intelligence Saving Throw: DC 19, each creature of the custodian's choice in a 20-foot emanation originating from the custodian. Failure: The target becomes stunned. Success: The target has disadvantage on attack rolls and ability checks until the end of its next turn.
BONUS ACTIONS
Adjust Size. The custodian magically shrinks to Medium or Large size or assumes its original Huge size. Its statistics are the same in each form, except its size and its melee reach, which is reduced to 5 feet while being Medium or Large. Any equipment it is wearing or carrying isn't transformed.
Summon Servants. The custodian casts unseen servant. While a servant is within 100 feet of the custodian, it can communicate with them telepathically, and the custodian shares their senses. The custodian can have a maximum of 10 servants at a time.
Custodian
Huge • Construct • Lawful Neutral
Armor Class 22
Hit Points 319 (22d12 + 176)
Speed 40 ft.
Initiative +6 (16)
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 28 (+9) | 9 (-1) | 26 (+8) | 16 (+3) | 10 (+0) | 9 (-1) |
Skills History +17, Perception +14
Damage Immunities poison, psychic
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned
Senses truesight 60 ft., darkvision 300 ft., passive Perception 24
Languages understands all languages but can’t speak
CR 21 (XP 33,000; PB +7)
Immutable Form. The custodian can't shape-shift.
Limited Magic Immunity. The custodian can't be affected or detected by spells of 4th level or lower unless it wishes to be. It has advantage on saving throws against all other spells and other magical effects.
Limited Telepathy. The custodian can magically transmit simple messages and images to any creature within 30 feet of it that can understand a language. This form of telepathy doesn't allow the receiving creature to telepathically respond.
Protective Glyphs. The custodian can cast glyph of warding (level 7, explosive rune with psychic damage) at will, requiring no material components and using Constitution as spellcasting modifier (spell save DC 23). It can only have a total of five glyphs active at the same time this way. If the custodian creates a fourth glyph, the first glyph vanishes.
Unusual Nature. The custodian doesn't require air, food, drink, or sleep.
ACTIONS
Multiattack. The custodian makes two Slam and two Arcane Beam attacks. It can replace both Arcane Beam attacks with a use of Information Overload, if available.
Slam. Melee Weapon Attack: +16, reach 10 ft. Hit: 41 (5d12 + 9) bludgeoning damage.
Arcane Beam. Ranged Spell Attack: +15, range 120 ft. Hit: 27 (5d10) force damage. Being within 5 feet of a hostile creature doesn't impose disadvantage on this attack.
Information Overload (Recharge 5-6). Intelligence Saving Throw: DC 23, each creature of the custodian's choice in a 30-foot emanation originating from the custodian. Failure: The target becomes stunned. Success: The target has disadvantage on attack rolls and ability checks until the end of its next turn.
BONUS ACTIONS
Adjust Size. The custodian magically shrinks to Medium or Large size or assumes its original Huge size. Its statistics are the same in each form, except its size and its melee reach, which is reduced to 5 feet while being Medium or Large. Any equipment it is wearing or carrying isn't transformed.
Summon Servants. The custodian casts unseen servant. While a servant is within 500 feet of the custodian, it can communicate with them telepathically, and the custodian shares their senses. The custodian can have a maximum of 20 servants at a time.
QUICK REFERENCE
USING MONSTER VARIANTS
Monster variants allow the GM to adjust encounters to better match the party’s strength, narrative needs, or world-building logic. A weaker variant may represent a juvenile, wounded, or lesser specimen, while a stronger variant can serve as a leader, champion, ancient creature, or apex predator.
Variants can be used to fine-tune difficulty without changing the core identity of the monster, making them ideal for scaling encounters, reinforcing hierarchy within a faction, or creating memorable boss-style enemies. You can even use the same stat block but different variants in the same encounter if you want.
Design Note. Each monster is primarily balanced around its normal version. Weaker and stronger variants are derived adjustments and may not always preserve every tactical nuance or “feel” of the original creature. GMs are encouraged to review variants carefully and adjust abilities or tactics as needed to best suit their table.