Aztec death whistle

Mind's Eye. The Aztec death whistle chooses a target, and open's up to show its gem, then sends psychic waves over to the target forcing the target to make DC 13 WIS saving throw or be charmed by the Aztec death whistle until the target succeeds the saving throw. The target may make a saving throw at the end of its turn.

Vines. Ranged Weapon Attack: +2 to hit, range 20/60 ft., 1 target. Hit: 4 (2d6 + 4) piercing damage.

Enter the description for how bonus actions work for your monster here.

Forest Defense. When an attack is made against the Aztec death whistle with a bludgeoning weapon, the Aztec death whistle may add +7 to its AC.