Bite

Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 1 piercing damage, and the dipsa attaches to the target. While attached, the dipsa can't attack, and at the start of each of the dipsa's turns, the target takes 3 (1d6) acid damage and must succeed on a DC 12 Constitution saving throw or have its hp maximum reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hp maximum to 0.