Buoyant Balloon

This fist-sized alchemically treated animal bladder is tightly sealed around a small wooden grip. By giving the handle a sharp twist you break a tiny glass ampoule just inside the bladder, filling the bag with buoyant gas and causing it to swell into a 3-foot-diameter sphere. Inflating the balloon is a move action. Once filled, the balloon floats upward at a speed of 60 feet per round. The balloon can lift up to 20 pounds of weight as it rises, though carrying more than 10 pounds reduces its speed to 30 feet per round. Multiple balloons attached to a single object add their carrying capacities together when determining how much weight they can lift. If a balloon is not held or bound in place in some manner, it continues to rise until it reaches a height of 600 feet, or until 10 minutes have passed, after which it pops or deflates and is destroyed.