Achaierai

An achaierai is a predator and scavenger of the lower planes that looks like a 15-foot-tall flightless bird, though its head and body are fused into one large unit, with four legs and atrophied wings. The thick, oily plumage covering its body all but conceals these tiny wings. An adult achaierai weighs on average 750 pounds.

Not Devils. Achaierais live and hunt on the scorched and blasted plains of Hell, where they make excellent use of their long, stilt-like legs in running down any lost souls or lesser devils who stumble into their feeding grounds. Once it has closed with its target, an achaierai attacks with its two front legs, punching or slashing, as well as biting with its powerful beak.

Smart and Deadly. Often underestimated for their animalistic form, achaierais prefer to hunt in shrieking packs and use their prey's confusion and their own reach to their advantage, circling their quarry and darting in to attack as soon as the victim becomes distracted, then retreating again before the prey has a chance to retaliate.

Eaters of the Dead. They have been known to wander through battlefields in the lower planes, picking over dying and regenerating creatures and souls, which has earned them the nickname "Hell's vultures."

Black Clouds. As achaierais are immune to the toxic clouds of others of their kind, they often work in conjunction to use these clouds to herd or scatter enemies, form long lines of black clouds to protect their retreat, or merely panic opponents in large melees.

Sadistic Hunters. Achaierais are fond of disemboweling their targets and feasting on the hot entrails while their mortally wounded prey screams itself to death. Of course, as outsiders, achaierais have no need to eat, and their elaborate hunting routines are simply the bird-beasts' sick form of entertainment.

About this conversion

Conversion by u/M4ttz0r

• Stats based on those found in 3.5 Monster Manual by Wizards of the Coast.
• Flavor text from Pathfinder Reference Document.
• Image Source

Achaierai

Large fiend, lawful evil

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• Armor Class 15 (natural armor)
• Hit Points 45 (6d10 + 12)
• Speed 50 ft.

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STR	DEX	CON	INT	WIS	CHA
19 (+4)	13 (+1)	14 (+2)	13 (+1)	14 (+2)	16 (+3)

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• Skills Athletics +7, Perception +5, Stealth +4
• Damage Resistances cold, fire, lightning
• Damage Immunities acid, poison
• Condition Immunities poisoned
• Senses darkvision 60 ft., passive Perception 15
• Languages Infernal
• Challenge 4 (1,400 XP)

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Actions

Multiattack. The achaierai makes three attacks: one with its beak and two with its claws.

Beak. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 9 (2d4 + 4) slashing damage.

Black Cloud (Recharge 5-6). The achaierai can exhale a toxic, chocking black cloud as a bonus action. Creatures other than the achaierai within the 10 foot radius cloud take 7 (2d6) poison damage at the start of each action in the cloud. In addition each creature that takes damage must succeed on a DC 15 Wisdom saving throw or suffer the effects of a confusion spell. The cloud lasts for 10 minutes or until a strong wind disperses the fog,