Chromescale Drake

Affinity for Artifacts. The drake has advantage on ability checks to interact with and manipulate weapons, equipment, and magic items.

Multiattack. The wyvern makes two attacks: one with its bite and one with its tail. While flying, it can use its claws in place of one other attack.

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 11 (2d6+4) piercing damage plus 3 (1d6) lightning damage.

Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8+4) slashing damage plus 1 lightning damage.

Tail. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 11 (2d6 + 4) bludgeoning damage plus 1 lightning damage. 

Electrical Chargeblast (Recharge 5-6). The drake channels large amounts of electrical energy through it, causing up to three 15-foot long, 5-foot wide rays of lightning to shoot out from its wings in a random direction. Each creature in the area of one of the rays must make a DC 14 Dexterity saving throw, taking 11 (2d8) lightning damage on a failed save, or half as much on a success. If a creature is hit by two or more rays, it must make the saving throw but take double the normal lightning damage (or triple damage if hit with three rays) on a fail, and normal damage on a success.