Giant Ant Queen

Keen Smell. The giant ant queen has advantage on Wisdom (Perception) checks that rely on smell.

Queen's Scent. Giant ants within 30 feet of the queen have advantage on attack rolls against any creature that attacked the queen within the last minute.

Multiattack. The giant ant queen makes two Bite attacks and one Sting attack.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) bludgeoning damage, and the target is grappled (escape DC 13). Until this grapple ends, the target is restrained, and the giant ant queen can't Bite a different target.

Sting. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage. The target must make a DC 13 Constitution saving throw, taking 22 (4d10) poison damage on a failed save, or half as much damage on a successful one.