Galvanic Blastseeker

When the blastseeker casts lightning bolt or thunderwave, it can roll a die. On an odd number, the blastseeker takes 9 (2d8) force damage. On an even number, the spell also deals 9 (2d8) lightning damage to each target that fails its saving throw.

When the blastseeker casts lightning bolt or thunderwave, all other creatures within 10 feet of the blastseeker each take 3 lightning damage.

The blastseeker can use a bonus action to fly up to 10 feet without provoking opportunity attacks.

The blastseeker's innate spellcasting ability is Intelligence (spell save DC 15, +7 to hit with spell attacks). The blastseeker can innately cast the following spells, requiring no components other than its Izzet gear, which doesn't function for others:

1/day: stoneskin

3/day each: levitate, lightning bolt, thunderwave

Melee or Ranged Weapon Attack: +3 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 3 (1d6) piercing damage, or 4 (1d8) piercing damage if used with two hands to make a melee attack.