"Step 1: Find the unpunctured hide of a young Air Whale...."
from Balloon Building by Halldor Laxness

The Balloon is an Aerial Transport ideal for gathering Storm Power, for capturing High Priests, and for collecting and casting Spells.

Because the Balloon is airborne, it doesn't need bridges to move around, but be careful: a few enemy hits will pop it like a soap bubble.

Remember: Transports cannot carry both a Priest and a Storm Crystal at the same time.