Void Storm Trident!

John waited for the dragon to finish charging it's beam and once it was finally ready and it unleashed it upon him, he shadow stepped at the last second. 

As he appeared behind it, he pulled back his arm sending electric currents through the air, at the same time, he began to gather even more wind behind it, and used even more wind magic to rotate it 

Because of this, it started to spin so fast it looked like a drill, as the wyvern continued to release a blazing red plasma beam at the wall, it tried to turn around as it could feel john's presence behind it, but it wasn't fast enough 

[Lightning... Imagine an ionised path for all this electric energy to travel through...] 

Lightning is essentially an ionised path for electricity to travel through, John who knew this implemented it into his spell, the stronger and more accurate the concept, the stronger the spell.