Merlin Ambrosius

Medium humanoid (tiefling), neutral good wizard (illusionist) 17/druid (circle of the shepherd) 8

Armor Class 18 (mage armor, ring of protection, staff of power)
Hit Points 120 (17d6+8d8+25)
Speed 30 ft.

10 (+0) 14 (+2) 12 (+1) 20 (+5) 18 (+4) 10 (+0)

Saving Throws Str +3, Dex +5, Con +4, Int +16, Wis +15, Cha +3
Skills Arcana +13, History +13, Insight +12, Investigation +13
Damage Resistances fire
Senses passive Investigation 28, passive Perception 19
Languages Druidic, Infernal, Olde English, Sylvan
Challenge 20 (25,000 XP)

Special Traits

  • Ageless. Merlin does not age, cannot suffer from frailty of old age, die from old age, or be aged magically.
  • Arcane Recovery (1/day). When Merlin finishes a short rest, he can choose to recover expended spell slots of a combined level that is equal to or less than 9th-level (although no single recovered spell may be higher than 6th-level).
  • Augmented Summoning. When Merlin conjures a fey or beast, the creature gains 2 hit points per Hit Die, and damage from its natural weapons is considered magical for the purpose of overcoming immunity and resistance to nonmagical attacks and damage.
  • Improved Figmentation. Merlin is able to simultaneously create a sound and image when he casts minor illusion.
  • Infernal Legacy. Merlin can cast hellish rebuke as a 2nd-level spell (DC 16), and he can cast darkness. These spells use Charisma for his spellcasting ability and once Merlin has cast one of them, he cannot cast it again until he finishes a long rest.
  • Instant Mirroring (1/short Rest). Merlin can use his reaction when he is attacked by a creature to create an illusory duplicate of himself. The creature attacks this illusion, causing it to dissipate, and the attack misses Merlin.
  • Malleable Figments. Merlin can use an action to alter his own illusion spells so long as the spell has a duration of at least 1 minute.
  • Owl Spirit (1/short Rest). Merlin can use a bonus action to conjure an incorporeal owl at a point he can see within 60 feet. He can also use a bonus action to move the owl up to 60 feet to a point he can see. The owl remains for 1 minute or until Merlin is incapacitated. You and your companions have advantage on Wisdom (Perception) checks while within 30 feet of the owl, and when a creature within 30 feet of the owl makes an attack roll Merlin can use his reaction to grant advantage to the creature’s attack roll.
  • Spellcasting. Merlin is a 20th-level spellcaster that uses either Intelligence or Wisdom as his spellcasting ability (spell save DC 21 or DC 20; +15 or +14 to hit with spell attacks). Merlin has the following spells prepared from the wizard and druid spell lists, although it is rumored that he’s gathered the formula for all arcane magic in his countless tomes:
  • Wild Shape (2/short Rest). Merlin can use his action to magically assume the shape of a beast that he has seen before that has a maximum CR of 1. He can stay in a beast shape for 4 hours. Merlin then reverts to his normal form unless he expends another use of this feature. He can revert to his normal form earlier by using a 165 bonus action on his turn. Merlin automatically reverts if he falls unconscious, drop to 0 hit points, or dies. While Merlin is transformed, the following rules apply:
    • Merlin’s game statistics are replaced by the statistics of the beast, but he retains his alignment, personality, and Intelligence, Wisdom, and Charisma scores. Merlin also retains all of his skill and saving throw proficiencies, in addition to gaining those of the creature. If the creature has the same proficiency as Merlin and the bonus in its stat block is higher than his, use the creature’s bonus instead of his. If the creature has any legendary or lair actions, Merlin can’t use them.
    • When Merlin transforms, he assumes the beast’s hit points and Hit Dice. When he reverts to his normal form, Merlin returns to the number of hit points he had before he transformed. However, if he reverts as a result of dropping to 0 hit points, any excess damage carries over to his normal form.
    • Merlin can’t cast spells, and his ability to speak or take any action that requires hands is limited to the capabilities of his beast form. Transforming doesn’t break Merlin’s concentration on a spell he’s already cast, however, or prevent him from taking actions that are part of a spell, such as call lightning, that he’s already cast.
    • Merlin retains the benefit of any features from his class, race, or other source and can use them if the new form is physically capable of doing so. However, he can’t use any of his special senses, such as darkvision, unless the new form also has that sense.
    • Merlin chooses whether his equipment falls to the ground in his space, merges into his new form, or is worn by it. Worn equipment functions as normal, but the GM decides whether it is practical for the new form to wear a piece of equipment, based on the creature’s shape and size. Merlin’s equipment doesn’t change size or shape to match the new form, and any equipment that the new form can’t wear must either fall to the ground or merge with it. Equipment that merges with the form has no effect until he leaves the form.
  • Woodstongue. Merlin can be understood by beasts, and he is able to understand their grunts and pantomime.
  • Brilliant. Merlin always knows how long it will be before the next sunset or sunrise, the northerly direction, and can perfectly remember anything he’s experienced within the last 31 days.
  • Perceptive. Merlin is able to read lips.
  • War Magic. Merlin has advantage when he is concentrating on a spell and has to make a Constitution saving throw from taking damage, he can wield weapons or a shield in both hands and still make somatic components for spellcasting, and can use his reaction to cast a spell (maximum casting time: 1 action) at a creature that provokes an opportunity attack from him.


  • Staff of Power (20 charges). Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 6 (1d8+2) magical bludgeoning damage. On a hit, Merlin can expend 1 charge to deal an extra 1d6 force damage to the target. Merlin can use an action to expend 1 or more of its charges to cast one of the following spells from it (spell save DC 19, +13 to hit with spell attacks): cone of cold (5 charges), fireball (5th-level version, 5 charges), globe of invulnerability (6 charges), hold monster (5 charges), levitate (2 charges), lightning bolt (5th-level version, 5 charges), magic missile (1 charge), ray of enfeeblement (1 charge), or wall of force (5 charges).
  • Retributive Strike. Merlin can use an action to break the staff of power, releasing its remaining magic in an explosion that fills a 30-foot-radius sphere centered on it. There’s a 50% chance Merlin instantly travels to a random plane (avoiding the explosion) otherwise he takes force damage equal to 16 × the number of charges in the staff. Every other creature in the area must make a DC 17 Dexterity saving throw. On a failed save, a creature takes an amount of force damage based on how far away it is from the point of origin (8 x charges if within 10 ft., 6 x charges if within 10 ft.–20 ft., 4 x charges if within 20 ft.–30 ft.). On a successful save, a creature takes half as much damage.


Merlin, a prominent figure of Arthurian legend, is easily the world’s most famous wizard. Traditionally, Merlin is a cambion: his mother was a mortal nun, and his father an incubus, and the source of his great powers. He is known as a druid, an enchanter, a diviner, a magician, and a wise advisor to the greatest king who ever lived on the British Isles.

There are many different versions of Merlin throughout history and, indeed, modern culture. In some legends, Merlin was responsible for erecting Stonehenge in Salisbury, and in others he is a wild man of the woods, or a shapeshifter. In most he is a diviner and a seer. In many ways, Merlin is the archetypal wizard and the inspiration for many to come.

Acumen or fate gently nudges Merlin toward the answers to his questions. When he fails to recollect or discover more about a subject of lore, he knows where he can get that information (usually from an athenaeum, library, institute of higher learning, another scholar, or mystical creature). The lengths to which he must go to acquire this information and the feasibility of doing so is entirely at the GM’s discretion.

Before Arthur arrived on the scene, Merlin served King Vortigen. The King’s castle kept collapsing, but Merlin solved the conundrum—two dragons, one red, one white, battled in a pool beneath. These two dragons symbolized the Britons and the Saxons.

Merlin later served Arthur’s father, Uther Pendragon, whose symbol was a dragon. He was responsible for arranging King Arthur’s birth— he disguised Uther so that he could sneak into the kingdom of Tinatgel to be with Igraine, his enemy’s wife. The wizard oversaw Arthur’s ascendance, setting the legendary test of the sword in the stone, and remained his advisor in Camelot until eventually dispatched by his infatuation, the Lady of the Lake. Legend says that he was buried in the forest of Brocéliande, although it is also said that he is not dead, but imprisoned.

In some legends, the wizard Merlin collected the thirteen treasures of the Island of Britain, and was buried with them. In others, they are stored, waiting Arthur’s return.

Throughout the middle of the second millennium Welsh myths include Thirteen Treasures of the Island of Britain, and although some of them may change depending on the text in question, there are always thirteen. These particular treasures are similar to magic items from the core rules.

Section 15: Copyright Notice

Mythological Figures & Maleficent Monsters Copyright 2020 EN Publishing. Authors Mike Myler, Russ Morrissey.

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