Why Skarner can't be a TfT champion right now...

Because RIOT cant decide what the heck he is.

However, I think if I were making Skarner, it would look like this:

Cost: Im thinking either 2 or 3 Origin: Ancient (new) Class: Brawler

Ancient bonus (could add more units here, like Azir or something, just something I thought up on the fly): Immunity to mana burn. Passive: Crystal Slash: As long as Skarner has mana, his attacks deal bonus magic damage and hit all adjacent enemies. Ultimate: Skarner gains a shield. As long as the shield holds, Skarner gains increased attack speed. Skarner will only reuse the shield if the current one is broken.