Thunderbeast

Actions

Multiattack. The beast can make 2 whip melee attacks, or 1 whip and 1 Laser beam   Arm Whip The beast uses its whip like arms to make a melee attack, Melee attack: +12 to hit, reach 10 ft, 1 target. Hit: 15 (2d8 +7) plus 5 (1d10) lightning damage   Bite Melee weapon attack: +10 to hit, reach 5ft, one target hit: 14 (2d10+5) piercing damage plus 6 (2d6) lightning damage   Laaser Beam. (Recharge 5-6) The Thunderbeast expels a large amount of energy as a powerful beam of electricity that is 90ft long, and 5 ft wide. Any creature in the line of fire must succede a DC 18 dexterity saving throw, taking 66 (12d10) lightning damage on a fail, and half as much on a success.

Legendary Actions

A thunderbeast gets 3 legendary actions, only one can be used at a time and only at the end of another creatures turn. They regain a legendary action at the start of their turn.   Instant Transmission: The beast lets out a thunderous roar and moves up to 60 ft within its thunderstorm instantly, ignoring opportunity attacks. Call Lightning: A thunderous scream is emitted and the creature calls a large bold of lightning down on another creature within 40 ft of itself. The target must make a DC 18 DEX save or take 12 (2d12) lightning damage, or half on a success. All other creatures within 10 ft of the target must make a DC 14 CON save or take 5 (1d10) thunder damage.

Regional Effects

Intense thunderstorm always accompanied

A raging chaotic being of thunder and lightning, personifications of the thunderstorms they reside in. A Thunderbeasts head has a jaw akin to a dragon, and no apparent eyes, ears or nose, with jagged spikes jutting from the back. Their upper body bears the appearance of a hunched, and broad shouldered humanoid. It's arms end in a tapper, similar to a whip, with barbs all across its arm that produce electricity, with a larger a cluster at the tips. Their legs are thin and feet are claws like a birds. They read their surroundings by measuring the electricity coming from everything.

Intense thunderstorms, more commonly above or near oceans.