Sources
CR
Type
Size
Alignment
Movement

Forest Master

Large Celestial (unicorn), Neutral Good

Armor Class 16 (natural armor)
Hit Points 105 (14d10 + 28)
Speed 50 ft.
STR
18
+4
DEX
14
+2
CON
15
+2
INT
13
+1
WIS
19
+4
CHA
17
+3
Saving Throws INT +4, WIS +7
Skills Insight +7, Nature +4, Perception +7
Damage Immunities poison
Condition Immunities Charmed, Paralyzed, Poisoned
Senses darkvision 60 ft., passive Perception 17
Languages Celestial, Elvish, Sylvan, telepathy 60 ft.
Challenge 8 (3,900 XP)

Traits

Legendary Resistance (2/Day). If the Forest Master fails a saving throw, he can choose to succeed instead.

Magic Resistance. The Forest Master has advantage on saving throws against spells and other magical effects.

Master of Beasts. The Forest Master can comprehend and communicate with any Beast, even if the Beast knows no languages.

Spellcasting

Spellcasting. The Forest Master casts one of the following spells, requiring no material components and using Wisdom as the spellcasting ability (spell save DC 15):

At will: druidcraft, fog cloud, guidance

2/day each: goodberry, greater restoration, pass without trace, speak with plants

Actions

Multiattack. The Forest Master makes either two Hooves attacks, two Moon Bolt attacks, or one of each.

Hooves. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit:11 (2d6 + 4) bludgeoning damage.

Moon Bolt. Ranged Spell Attack: +7 to hit, range 60 ft., one target. Hit:11 (2d6 + 4) radiant damage.

Bonus Actions

Erupting Briars (Recharge 4–6). The Forest Master touches his horn to the earth and causes a 5-foot-tall wall of briars to erupt in a 90-foot line that is 10 feet wide. When the wall appears, each creature in its area is pushed into the nearest unoccupied space adjacent to the wall and must make a DC 15 Dexterity saving throw, taking 27 (6d8) piercing damage on a failed save or half as much damage on a successful one.

The wall of briars lasts until the start of the Forest Master's next turn. The wall blocks line of sight and counts as difficult terrain for all creatures except the Forest Master. The first time a creature enters the wall's area on a turn, that creature must succeed on a DC 15 Dexterity saving throw or take 13 (3d8) piercing damage.

Reactions

Misty Escape. If the Forest Master takes damage from a melee attack, he, along with any equipment he is wearing or carrying, teleports to an unoccupied space within 30 feet that he can see.

Lore

Said to be older than the trees themselves, the Forest Master is a wise and powerful unicorn who rules over the creatures of Darken Wood in Krynn. The ancient being's body is wreathed in protective briars, and moonlight dances around the unicorn's horn. Those who threaten the Forest Master's lands find themselves beguiled by magical mist and nigh-impregnable thorny thickets, but those who gain the Forest Master's favor are blessed with healing and protected as they traverse the woods.