The Scorpion super heavy grav tank is one of the largest vehicles capable of anti-gravatic movement. The Eldar have used the Scorpion to spearhead an all out attack, especially against strongly defended positions where its Pulsars are used to engage enemy bunkers and strong points. From the Forgeworld Displays.
The skill (and patience) required to paint that extraordinary planet theme is inspirational. How they managed to keep the planets in perspective on that curved hull is beyond me.