Sand man Zac
I don't really know what it would look like exactly, but this could easily be the most amazing skin ever. His Q, instead of being elastic goo would be him blasting sand from his arms out forward. His W blasts sand out from his body. His E is him jetting himself through the air as a stream of sand, instead of a launch. His R would be sand splashing into his enemies. Idk, give my Zac some love Rito.