How do you get this ride? Well, you kill bosses in adventures to pick up Ether Clovers between today and March 19th. It takes 350 clovers to pick up the hoverboard, but there are a number of lesser rewards you can also buy if you already have the board or just don’t really want it for some reason. You’ve only got a little time, so if you’re eager to get the signature reward you might want to get in and get playing quickly.
Source: Official Site