Skrill Part 4

                                                               Skrill Part 4
Riding Lightning

The Skrill riding lightning
The Skrill is able to "ride" lightning bolts. It was first and only seen in "A Time to Skrill", after the Skrill was tamed and set free, it ascended upwards at hypersonic speeds through a field of lightning bolts. The Skrill was able to use the energy of lightning to accelerate very quickly and fly at hypersonic speeds. It was able to reach the clouds from the glacier it was on in less than a second, which would mean that the Skrill was traveling at least several times faster than the speed of sound. It is unknown why the Skrill only used this ability once, though it's possibly due to a limit. This move makes the Skrill far faster than any other dragon, despite the stats saying otherwise.
Electrical Field

The Skrill creating an electrical field to defend itself against a plasma blast
Skrills are able to create an electrical field, that acts similar to a force field. It does this by redirecting energy through its wings, as the electricity forms together by closing its wings together and springing its tail upwards. It then forms a small electrical field that can be used to block itself from projectiles, similar to how a Seashocker does to protect itself from predators. This was shown when Dagur was in control of the Skrill; it used this ability to block Toothless' plasmablasts in "A View to a Skrill, Part 1". The Skrill can cover its wings for extra protection against a stronger blast. However, the electrical field was seen to be strong enough to deflect some blasts from Toothless, as seen in the third time Toothless fired, the Skrill did not cover its wings. The resistance power of the electrical field cannot be determined other than it was able to deflect weak blasts. It is unknown how a much stronger blast could affect the Skrill while using the electrical field. This, however, determines that this ability is the last line of defense for the Skrill. When the Skrill was under control of Dagur, it could not dodge the blasts or accurately fire back because it was tied up on ropes.
Firepower

 The Skrill firing lighting

The destructive blast of impact
Unlike other dragons' fire attacks, where it is a single blast projectile or a stream of fire, Skrills have the ability to shoot lightning in a beam over great distances, adding more power to it and more damage to whatever is unlucky enough to get hit. It is also said to be able to direct multiple lightning bolts at once. All the electrical power it gets to fire its lightning comes directly from the clouds by natural lightning. A side effect of getting hit by the electric blast causes people to talk gibberish.