Multiattack

The mamura makes three claw attacks and one whiptail sting attack.

Claw

Melee Weapon Attack: +7 to hit, range 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage, and the target must succeed on a DC 15 Constitution saving throw or be poisoned for 1 round. The poison duration is cumulative with multiple failed saving throws.

Whiptail Stinger

Melee Weapon Attack: +7 to hit, range 5 ft., one target. Hit: 8 (1d8 + 4) piercing damage, and the target must succeed on a DC 15 Constitution saving throw or take 1d6 poison damage. If the target is also poisoned by the mamura's claws, it takes another 1d6 poison damage at the start of each of its turns while the poisoning remains in effect.