Rapidly throws their boomerang. Whilst it is outbound, players can ride atop it. When it hits something (a player landing on it doesn’t count) it returns, and players cannot ride it during this time. If it hits a player whilst outbound, it provides an X-axis boost. User does not need to wait for the boomerang to throw another one.
Character is a Lovecraftian-detective, using a boomerang as a weapon.