My opininon about this combo is same as alexino but the more important point is meteor than lightning, because meteor have more ways how to do a "imba" dmg; for example when meteor hit a wall or push player on wall it deal a very big dmg (and i event dont metion about how much knockback is after it).
By the way if somebody wanna nerft some spells i have more ideas about it :D.
For example shield,firespray as said chomik (on the other hand firespray is very slow and player ussually can avoid it) or mainly bumerang. This is one of mostly using spell and one of a few which player cant hit or even def (if you havent shield) and has big knockback too i think.
But other players can see it different i want know their opinion about these 4 spells. It would be nice send their opinion too because 3 players are still small number.