Horizonback Tortoise
Gargantuan monstrosity, unaligned
Armor Class
17 (natural armor), 22 while in its shell
Hit Points
227 (13d20 + 91)
Speed
20 ft.
STR
28 (+9)
DEX
3 (-4)
CON
25 (+7)
INT
4 (-3)
WIS
10 (+0)
CHA
5 (-3)
Damage Immunities
poison
Condition Immunities
poisoned
Senses
darkvision 60 ft., passive Perception 10
Saving Throws
Str +12, Con +10
Languages
understands Goblin but can’t speak
Challenge
7 (3,900 XP)
Amphibious. The tortoise can breathe air and water.
Massive Frame. The tortoise 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 the tortoise when it falls prone is grappled (escape DC 18). Until the grapple ends, the creature is prone and restrained.
Actions
Bite. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 28 (3d12 + 9) bludgeoning damage.
Shell Defense (Recharge 4–6). The tortoise 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.