So as we all know....

The Arcade Riven splash art shows "?" on boxes that arnt filled in with characters. These are just some ideas for champs that could get arcade or battle boss skins...

Ezreal: We all know Ez has not gotten great skins in the past. Only one of his skins change his particles and it isnt even that big of a change in the first place. This is a good time to give him a great legendary skin that he deserves.

Lux: Anonther arcade skin. She did just get her star guardian skin but her particles could make for some awesome arcade skins.

Malzahar: would work for a battle boss. His Q could just be 2 DDR arrows closing in on each other.

Xerath: Another good choice for battle boss

Syndra: ya good to go yall cowards dont even smoke crack?