Multiattack

The rubezahl makes one Gore attack and two Claw attacks.

Claw

Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 15 (3d6 + 5) slashing damage plus 7 (2d6) lightning damage.

Gore

Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 18 (3d8 + 5) piercing damage, and the target creature must succeed on a DC 16 Strength saving throw or be knocked prone.

Thunderstrike (Recharge 5-6)

The rubezahl calls a sizzling bolt of lightning out of the sky, or from the air if underground or indoors, to strike a point the rubezahl can see within 150 feet of it. Each creature within 20 feet of that point must make a DC 16 Dexterity saving throw. On a failure, the creature takes 36 (8d8) lightning damage and is stunned until the end of its next turn. On a success, the creature takes half the damage and isn't stunned.

Spellcasting

The rubezahl casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 16): At will: disguise self, fog cloud 3/day each: gust of wind, sleet storm 1/day: control weather (as an action)