Sources
CR
Type
Size
Alignment
Movement

Virruza

Large Aberration (shapechanger), Chaotic Neutral

Armor Class 16 (natural armor)
Hit Points 127 (15d10 + 45)
Speed 30 ft.
STR
18
+4
DEX
15
+2
CON
16
+3
INT
11
+0
WIS
8
-1
CHA
12
+1
Skills Arcana +3, Perception +2
Damage Resistances acid, cold, fire, lightning, thunder
Senses blindsight 30 ft., darkvision 60 ft., passive Perception 12
Languages Slaad, telepathy 60 ft.
Challenge 8 (3,900 XP)

Traits

Death Throes. When Virruza is reduced to 0 hit points, he turns into a puddle of acid and splashes acid on those around him. Each creature within 5 feet of him must succeed on a DC 12 Dexterity saving throw or be covered in acid for 1 minute. A creature can use its action to scrape or wash the acid off itself or another creature. A creature covered in the acid takes 7 (2d6) acid damage at the start of each of its turns.

Magic Resistance. Virruza has advantage on saving throws against spells and other magical effects.

Regeneration. Virruza regains 10 hit points at the start of its turn if it has at least 1 hit point.

Spellcasting

Innate Spellcasting. Virruza's innate spellcasting ability is Charisma (spell save DC 12). The slaad can innately cast the following spells, requiring no material components:

At will: detect magic, detect thoughts, mage hand

1/day: fireball

2/day each: fear, invisibility (self only)

Actions

Multiattack. Virruza makes three attacks: one with its bite and two with its claws or staff. Alternatively, it uses its Hurl Flame twice.

Bite (Slaad Form Only). Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit:11 (2d6 + 4) piercing damage.

Claw (Slaad Form Only). Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit:7 (1d6 + 4) slashing damage.

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

Hurl Flame. Ranged Spell Attack: +4 to hit, range 60 ft., one target. Hit:10 (3d6) fire damage. The fire ignites flammable objects that aren't being worn or carried.

Lore

Changed by days of strange experiments involving draconian blood and exposure to the Spawning Shard, Virruza now looks like a tumescent draconian with warty green skin and an overly large mouth.