Horus unleashes his wrath in a twisting funnel cloud. The Tornado can sweep up entire armies, or turn cities into piles of rubble. The Tornado moves around randomly, and can damage allied units or buildings if it gets too close, though it does more damage to enemy units and buildings.

To summon the Tornado, left click on the Tornado icon at the top of the screen, then left click where you want the Tornado to appear. Just be careful where you target it.