Mossback Steward

Gargantuan Monstrosity, Unaligned

AC: 17

Initiative: -4 (6)

HP: 227 (13d20 + 91)

Speed: 20 ft.

STR: 28 (+9)
DEX: 3 (-4)
CON: 25 (+7)
INT: 12 (+1)
WIS: 17 (+3)
CHA: 5 (-3)

Saving Throws: Str +12, Con +10

Skills: Arcana +5, Insight +7, Nature +5, Perception +7, Persuasion +5

Immunities: poison

Condition Immunities: poisoned

Senses: darkvision 60 ft, Passive Perception 10

Languages: telepathy 120 ft, understands Goblin, Common, and Primordial but can't speak

CR: 8 (XP 3,900; PB +3)

Amphibious.

Mossback Steward can breathe air and water.

Massive Frame.

Mossback Steward can carry up to 20,000 pounds of weight atop its shell, but moves at half speed if the weight exceeds 10,000 pounds. Medium or smaller creatures can move underneath the tortoise while it's not prone.

Any creature under Mossback Steward when it falls prone is grappled (escape DC 18). Until the grapple ends, the creature is prone and restrained.

Innate Spellcasting.

Mossback Steward's innate spellcasting ability is Wisdom (spell save DC 15). It can innately cast the following spells, requiring no material components.

At will: friends

Actions

Bite.

Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 28 (3d12 + 9) bludgeoning damage.

Shell Defense (Recharge 4-6).

Mossback Steward withdraws into its shell, falls prone, and gains a +5 bonus to AC. While the tortoise is in its shell, its speed is 0 and can't increase. The tortoise can emerge from its shell as an action, whereupon it is no longer prone.

Find this creature in the encounter builder

Source: Explorer's Guide to Wildemount, p. 256 - Licenses and attribution