Lightning Elemental

Lightning Form. A creature that touches the elemental or hits it with a melee attack while with in 5 feet of it takes 5 (1d10) lightning damage. In addition, the elemental can enter a hostile creature's space and stop there. The first time it enters a creature's space on a turn, that creature takes 5 (1d10) lightning damage.

Incorporeal Movement. The elemental can move through other creatures and objects as if they were difficult terrain. It takes 5 (1d10) force damage if it ends its turn inside an object. When moving through metal, instead of treating it as difficult terrain, the elemental can move 5 feet for every 1 foot of its movement.

Heat Sensitivity. Until the end of its next turn after the elemental takes fire damage, its fly speed is halved and it loses its multiattack teleports.

ACTIONS
Multiattack. The elemental can make three touch attacks, each has to be against a different target. The elemental may teleport to a space adjacent to its target after each attack.

Touch. Melee Weapon Attack: +9 to hit, reach 10ft., one target. Hit: 13 (2d6+6) lightning damage. If the attack critical hits, the target is stunned until the end of its next turn.

Lightning (Recharge 6). The elemental can teleport up to 363 miles away. Any creatures between it and its destination must make a DC 17 Dexterity saving throw or take 26 (4d12) lightning damage.