Level: Ranger 2, Sorcerer 2, Wizard 2
Components: V, S, F/DF
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Area: 100-ft.-radius cylinder, 500 ft. high
Saving Throw: None
Spell Resistance: No
As alarm, except the area is a cylinder that extends 500 feet into the air and the alarm only sounds when a flying creature of Medium or larger size enters or touches the warded area.
Arcane Focus: A silver bell and an eagle’s feather.
Source: Heroes of Battle, page 124.