Multiattack

The marsh dire makes three attacks: two with its claws and one with its strangling vine.

Claws

Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 11 (2d6 + 4) slashing damage.

Strangling Vine

Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 13 (2d8 + 4) bludgeoning damage plus 7 (2d6) necrotic damage. If the target is Medium or smaller, it is grappled (escape DC 15). Until this grapple ends, the target can't breathe, speak, or cast spells with verbal components; is restrained; and takes 7 (2d6) necrotic damage at the start of each of the marsh dire's turns. The marsh dire has three vines, each of which can grapple only one target.