Yara-Ma-Yha-Who

Tree Climber. The Yara-Ma-Yha-Who has advantage on climbing, and ignores difficult terrain when in a tree.

Blood Grapple. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. The targeted creature must succeed on a (DC 7) Strength saving throw or become grappled. Once grappled, the Yara-Ma-Yha-Who can use Blood Syphon on the grappled creature as a bonus action for that turn. For every following turn, it may use Blood Syphon normally. On their turn, a grappled creature may roll to escape the grapple again, escaping on a success. Only one creature may be grappled by a single Yara-Ma-Yha-Who at a time.

Blood Syphon. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 4 (2d4) Piercing damage. This ability can only be used on a grappled creature.

Engulf. Melee Weapon Attack: +0 to hit, reach 2 ft., one corpse. The Yara-Ma-Yha-Who consumes one dead body whole; destroying the body, and healing the Yara-Ma-Yha-Who by 12 (2d8 + 4) hp.