Multiattack

The devil makes two scimitar attacks.

Scimitar

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage. If the target is neither undead nor a construct, it also takes 5 (1d10) necrotic damage, or half damage with a successful DC 15 Constitution saving throw. Plants, oozes, and creatures with the Amphibious, Water Breathing, or Water Form traits have disadvantage on this saving throw. If the saving throw fails by 5 or more, the target also gains one level of exhaustion.