Storm Devil

Devil's Sight. Magical darkness doesn't impede the devil's darkvision.

Magic Resistance. The devil has advantage on saving throws against spells and other magical effects.

Multiattack. The devil makes three attacks: one with its spear and two with its horns.

Horns. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 11 (1d8 + 7) piercing damage plus 7 (2d6) lightning damage and 8 (2d8) thunder damage.

Lightning Trident. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 11 (1d8 + 7) piercing damage plus 10 (3d6) lightning damage. If the target is a creature, it must succeed on a DC 19 Strength saving throw, or be tethered by a 40 ft. arc of electricity to the trident. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Up to three creatures can be tethered in this way at a time. If at any point the creature becomes more than 40 ft. away from the trident, the tether breaks. As a bonus action, if the devil is wielding the trident it can shock all creatures tethered for 7 (2d6) lightning damage.

Cyclone (Recharge 6). The devil magically forms a wall of wind in a cylinder with a 10 ft radius and 50 ft high, from the ground centered on the devil. Any other creature within this cylinder must make a DC 19 Constitution saving through or take 24 (5d8) thunder damage and be knocked prone.

The wind maintains until the start of the devil's next turn. During that time the wind is difficult terrain and ranged attacks that go through the cylinder's space have disadvantage.