Spring is a movement skill that makes you throw a small, blue spring in front of you. Anyone who touches it will be sent in the direction the spring is facing (which means it can even throw you downwards). It lasts for a few seconds before disappearing.
It can be used as a cheap version of Double Jump, or combined with to reach very high ground. A Platform can also be utillized to create safe zones extremely high up in the air.
Higher levels decrease the cooldown and increase the Spring's power.