The First Creature: The Biridlu AKA The Mantle

Work on my new Tekumel game proceeds. Here is the first monster I've finished. Enjoy!

Biridlú (The Mantle)

Hit Dice: 4+1

Armor Class: 16 [3]

Attacks: Claws (1d6)

Saving Throw: 12

Special: Crushing attack

Move: 4 / 12 (flying)

Groups of these black, flying creatures cling to the ceilings of the Underworld, ready to drop on victims and suffocate them in their muscular bodies. Biridlú are often used as treasure guardians and they fight to the death and never check morale.

They ambush their opponents from the ceiling. If the Biridlú gets surprise, it will fall on a victim with no to-hit roll required. Once inside the folds of the Biridlú's cape, the creature begins to crush its prey. Victims take 1d6 the first turn and 2d6 each additional turn. On a successful saving throw (victims can add ST Mod), the victim can throw off the beast. Friends can help cut a victim out, as well. If the Biridlú is on the ground, they can claw or attempt to envelope a victim, which requires a successful to-hit roll. On the next round, the creature can crush their victim.

Their powerful bodies take full damage from steel weapons, magic, and fire; other weapons are ineffectual. They regenerate damage, except for fire damage, so once killed they must be burned or they will revive in 3 combat rounds.