Spark (Wario Land 3)
From the Super Mario Wiki
Sparks are small balls of electricity in Wario Land 3. They float around with versatility, and can be found near climbable areas and places where an Owl is used to fly around in. In either case, touching them will cause Wario to be knocked to the ground below. They are similar in behavior to the Kotsuheri of Wario Land II.