A month has passed since Void Spirit was introduced to the DotA universe, along with Snap Fire. This means that enough time has passed for both heroes to be figured out to a reasonable degree. Out of the two, Void Spirit is the one with the higher skill ceiling, and in the hand of a capable player could easily snowball and provide his team with a huge advantage.

He is a melee intelligence hero that is most effective as a core, either on the off lane or the mid lane. He provides a lot of magic damage, wave clear abilities, huge mobility, gank and nuking potential.

I believe that the hero will come back in the meta soon because most of his counters got nerfed in the last patches, so this is a great time to learn him and abuse him to win games in the near future.