You gain a better vantage on your foes from your increased height above the field of combat as well as through the tiny rootlets you send into the ground around you.

Encounter  
Minor Action      Personal

Effect: You ignore penalties for cover (but not superior cover), concealment, and total concealment. You can attack an invisible target as if it wasn't invisible. This benefit lasts until you successfully deal damage to a creature that enjoys one of the protections noted or until the end of the encounter.

Published in Dragon Magazine 388.