Sources
CR
Type
Size
Alignment
Movement

Bone Roc

Huge Undead, Neutral Evil

Armor Class 15
Hit Points 133 (14d12 + 42)
Speed 15 ft., fly 90 ft.
STR
18
+4
DEX
20
+5
CON
16
+3
INT
2
-4
WIS
17
+3
CHA
10
+0
Saving Throws DEX +8, WIS +6
Skills Perception +6
Damage Vulnerabilities bludgeoning
Damage Immunities poison
Condition Immunities Exhaustion, Poisoned
Senses darkvision 120 ft., passive Perception 16
Languages
Challenge 8 (3,900 XP)

Actions

Multiattack. The bone roc makes one Beak attack and two Talons attacks.

Beak. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit:14 (2d8 + 5) piercing damage.

Talons. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit:12 (2d6 + 5) slashing damage plus 10 (3d6) necrotic damage.

Lore

A bone roc is a birdlike Undead that can incorporate the bones of multiple flying creatures. Despite their name, bone rocs aren't always reanimated skeletons of rocs. You may customize a bone roc by rolling on the Bone Roc Sources table to determine the type of bones used and how that affects its stat block.