Vampiric Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:6 (1d8 + 2) piercing damage. The target must succeed on a DC 11 Constitution saving throw or its hit point maximum is reduced by an amount equal to the damage taken, and the ixitxachitl regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0.
Barbed Tail. When a creature provokes an opportunity attack from the ixitxachitl, the ixitxachitl can make the following attack instead of using its bite.
Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit:9 (1d10 + 4) piercing damage.
Ixitxachitl (pronounced ick-zit-zah-chit-ul) are aquatic creatures resembling manta rays, with small, clawed hands at the ends of their "wings" and black eyes gleaming with sinister intelligence. Many creatures mistake ixitxachitl for common manta rays, but this can prove a deadly mistake. The ixitxachitl are as evil as they are cunning, leading to their common nickname "demon rays." They inhabit bodies of fresh and salt water, but their violent nature means that little is known of them.